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04.02 Environmental Resources Lab Report

Instructions: For this lab, use the lab report to record your information. You will submit your completed lab report.

Note: If you cannot complete this lab as directed, please contact your instructor for assistance.

Name and Title:
Include your name, instructor's name, and date.

Introduction
To improve your soil, you should first know what you’re starting with. In this lab, you will sample local soil to determine its composition and pH range.

Materials
• Distilled water
• Metric ruler
• Small zipper storage bag
• Soil from the yard, garden, or other local source
• Jar with tightly fitting lid (tall and skinny would be best)
• Small digging tool
• pH strips (available at hardware and pool supply stores) or vinegar and baking soda

Pre-lab Questions
1. Describe soil particles (sand, silt, and clay) in term of size and texture.
2. If soil is too acidic, what substance is usually added? If soil is too alkaline, what substance is usually added?
3. Why are soil composition and pH important to know?

Hypothesis
Predict what type of soil you think is in your local area (mostly sand, silt, clay, or mixed) and if it more acidic, more alkaline, or neutral.

Procedure

Obtaining soil samples for your jar and resealable bag
1. Take your jar, resealable bag, and digging tool into your garden or yard. Use the digging tool to dig a hole 3–6 inches deep. Take your soil sample from the soil at this depth.
2. Place approximately one cup of soil into the resealable bag, squeeze the air out of the bag, and zip it shut (you will use this soil later in the lab).
3. Dig up additional soil and fill the jar to approximately 1/4 full of soil. Take everything back inside to your work area.
Note: To avoid making a mess, it is best to work on a covered surface (for example, a kitchen counter covered with old newspaper or plastic wrap).
4. Fill the remaining space in the jar with water, and screw the cap on tightly (see Figure 1, below).
5. Shake the jar so that the dirt is totally dispersed through the water (see Figure 2, below). Set down the jar and allow the shaken contents to settle completely (see Figure 3, below). Leave it undisturbed overnight while you test the texture and pH of the soil in your resealable bag.

Note: Do not pick up the jar. Doing so will begin to mix the contents again.

Figure 1 Figure 2 Figure 3

Fill jar 3/4 full of water and 1/4 full of soil. With the lid on tightly, shake the jar well until the soil and water have mixed thoroughly. Let the jar sit. Materials will begin to settle out and form layers.



Testing texture and pH of the soil in your resealable bag
1. While you wait for the soil and water sample to settle in the jar, you can test the texture of the sample in the resealable bag. First, remove a small amount and moisten it slightly to test the texture. Record your observations in the Data and Observations section.
a. Rough and gritty soil that barely sticks together is sand.
b. Loams (mixtures of clay, silt, and sand) feel medium-textured.
c. Smooth and sticky fine textures indicate clay.
2. Next, test the pH using one of the following methods:
a. If you have pH strips: To test with pH strips, place the soil sample in a small bowl or container and add a small amount of distilled water. Add just enough water to make the soil slightly liquid, like a milkshake consistency. Dip the pH strip in and compare it to the color identification provided with the test strips. Record your data in the Data and Observations section.
b. If you do not have pH strips: Use vinegar and baking soda instead. To do this, split the sample into two containers. Add a half cup of vinegar to the first sample of soil, mix gently, and watch to see if it bubbles or fizzes. If it does, it is alkaline. In the second container, add a half cup of distilled water to the soil and mix gently. Then add a half cup of baking soda. If there is a reaction of bubbles or fizzing, the soil is acidic. If neither sample has a reaction, the soil is neutral. Record your data in the Data and Observations section.

Testing soil sample in your jar
1. For the sample in the jar, wait until after the contents have settled and you can see several different-colored layers. In addition, you may see some material floating at the top of the water. You may also see that the water is still clouded with some particles.
2. Measure the total thickness of the soil in the jar after it settles. Record this measurement (in centimeters) in the data table.
3. Observe the settled dirt carefully. There should be distinct layers of soil. The bottom will be your sand layer (largest particles fall out first), then clay or silt, depending on the kind of soil you have. Carefully measure the thickness of any layers of soil seen in your jar. Record your measurements in centimeters (cm) in the data table. Also record the color of each layer.

Answers

Answer 1
69 divided by 1/4 as a fraction

Related Questions

If a dog starts to put its paw down on a sharp stone, the tough skin skin protects underlying structures from damage. Additionally, touch receptors in the skin send sensory signals to the spinal cord. The spinal cord then sends a signal to the muscles to lift the paw rather than continuing to press down. In this scenario, the dog may experience discomfort but avoid injury.

What two body systems are being used to protect the structures beneath the dog's skin and signal the muscles to lift the paw?
A.
integumentary and nervous systems
B.
circulatory and nervous systems
C.
circulatory and lymphatic systems
D.
integumentary and lymphatic systems



PLZZ HELP QUICKKK

Answers

the answer is A
i dont really know how to explain but this was a queen in my test and this was the right answer

The two body systems being used to protect the structures beneath the dog's skin and signal the muscles to lift the paw are the integumentary and nervous systems, which are in option A.

What is the organ system?

The dog's response to the sharp stone involves the coordinated action of two body systems: the integumentary system and the nervous system. The integumentary system consists of the skin and its associated structures, including hair, nails, and glands. The skin acts as a protective barrier between the external environment and the underlying tissues, and it has specialized structures, such as tough, keratinized layers in the paw pads, that can withstand pressure and protect the sensitive tissues underneath.

Hence, the two body systems being used to protect the structures beneath the dog's skin and signal the muscles to lift the paw are the integumentary and nervous systems, which are in option A.

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Please help me this is really hard to understand it’s a matching solving for physiology

Answers

People need to stop scamming

how do Asian elephant move​

Answers

Answer:

QUESTION:

how do Asian elephant move​

ANSWER:

https://www.nationalgeographic.com/animals/mammals/facts/asian-elephant

Explanation:

Hope that this helps you out! :)                

If you have any questions please put them in the comment section below this answer.                

Have a great rest of your day/night!                

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A population of mosquitoes is exposed to the pesticide DDT for several generations. At the end of that time, most individuals in the population are resistant to DDT. The most likely reason is that:
A. random mutations in each generation made mosquitoes resistant to DDT.
B. some individuals in the original population had the mutations that led to resistance.
C. DDT caused the mutations that led to resistance.
D. somatic mutations in the original population were passed on to subsequent generations.
E. by chance, new mutations that led to DDT resistance arose after DDT was used.

Answers

Answer:

B

Explanation:

A population of mosquitoes is exposed to the pesticide DDT for several generations. At the end of that time, most individuals in the population are resistant to DDT and the most likely reason is that  some individuals in the original population had the mutations that led to resistance. Option B is correct.

What is mutation ?

Mutation is the change in which there is slight change in the genome sequence of a DNA or RNA along with the gene. The mutation lead to various types to adaptations along with the diseases.        

Resistance is the condition when the species on the multiple exposures develop certain kind of adaptations to it and these traits are sometime inherited sometimes not inherited.

Mutations are friendly as well where sometimes a disease causing mutation can be altered with the further mutation in it.

Therefore on the multiple exposure it led to condition of resistance in  the species.

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Answers

Answer:

A- Chromosome, DNA, Gene

Explanation:

Chromosomes have two sister chromatids that connect at the centromere forming a shape similar to an X. DNA is found in a double helix formation, including Adenine, Thymine,  Guanine, and Cytosine. Genes are found per singular section of the DNA double helix.

Answer: A

You are welcome

Displacements that occur in opposite directions are ________ from each other to find the total displacement.

Answers

Answer:

Displacements that occur in opposite directions are subtracted from each other to find the total displacement.

The coded information of a DNA molecule is determined by the

A .sequence of amino acids.

B .number of enzymes.

C. sequence of sugar-phosphate units

D. sequence of nitrogenous bases. ​

Answers

D. sequence of nitrogenous bases

Which of the following would be considered part of an emerald tree boa's ecological niche? Select all that apply. mating ritual inhabiting the tree canopy humans eating birds

Answers

Answer:

Eating Birds, and Inhabiting the tree canopy are the answers

Explanation:

Can you please help me

Answers

Answer:

a survey found 65 percent...

Explanation:

I'm pretty sure

Select ALL the correct answers.
Which of the following statements about energy in systems are true?

The amount of energy in a system must equal the amount of matter in the system.
Energy can be changed from one form to another.
When energy leaves a system, it is transformed into matter.
Energy can be transferred into or out of a system.

Answers

Answer:

When energy leaves a system it is transformed into matter

Explanation:

First Law of Thermodynamics: Energy can be changed from one form to another, but it cannot be created or destroyed. The total amount of energy and matter in the Universe remains constant, merely changing from one form to another.

What is NOT a physical change
A. Getting clothes wet
B. Burning a candle
C. Breaking glass

Answers

Answer:

a

Explanation:

I think that’s it’s a

Describe two types of living things that biologists could study. Think about types of living things that are not in the ocean — what categories of living things are on land?

Answers

Answer:

Following are the two types of living things that biologists could study:

1) Animals

2) Plants

Explanation:

As we know plants and animals are the most important organisms. Animals has further categories of living things are on land:

1) Birds

2) Mammals

3) Reptiles

4) Amphibians

Fishes are not included because they are in water but not on land.

Which statement describes a primary function of the cell wall of a plant cell?

Answers

Answer:

I DON'T SEE OPTIONS, BUT HERE IS MY GUESS

It is for support.

Explanation:

Plant cells lack necessary support without their cell walls. An animal cells usually have skeleton of some sort to support it, so they don't need cell walls. Plants, on the other hand, don't have skeletons.

according to the dichotomous key organism 3 is a

A) leech

B) bristle worm

C) water scorpion

D) dragonfly nymph

Answers

Answer

The correct answer is A) leech

Explanation:

According to the dichotomous key organism 3 is a leech. Therefore, option (A) is correct.

What is a  dichotomous key?

A dichotomous key is a tool used by biologists to identify organisms based on their characteristics. It consists of a series of questions with two possible answers for each question. By following the path of the key, the user can narrow down the possible identities of the organism until a final identification is reached.

Dichotomous keys are often used to identify species in fieldwork and can be based on physical characteristics such as color, size, and shape, or other traits such as behavior, habitat, and geographic range. These keys provide an efficient way to identify organisms and are widely used in fields such as ecology, botany, and zoology. However, the accuracy of a dichotomous key depends on the quality and specificity of the questions used and the expertise of the user in interpreting the results.

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The human body temperature is normally 98.6°F. As a person exercises, the body temperature starts to increase. As a result of the increased body temperature, the perspiration process
begins to cool the body. Which best describes what the body is doing when it perspires?
A. increasing osmosis
B. reducing transpiration
C. controlling metabolism
D. maintaining homeostasis

Answers

d. maintaining homeostasis

Answer:

.A. increasing osmosis

Melissa is investigating how different types of music affect student heart rates. what is the dependent variable?

Answers

Answer:

The dependent variable is the student's heart rate

Explanation:

the student heart rate is what is being observed in relation to the type of music being played.

Why is it necessary to genetically engineer the bacteria to produce insulin instead of inserting the insulin gene in humans?

Answers

Answer:

????????????????

Explanation:

RDNA technology made it possible for bacteria to express an insulin gene from humans for production of insulin synthetically.

What is recombinant DNA technology?

Alteration of genetic material from one organism to another, to obtain desired and enhanced genetic characteristics in recombinant organism, is called as recombinant DNA technology.

In this method different genetic material from different organisms can be combined to develop desired characteristics, for example, DNA from two different species is joined together, and the recombinant DNA molecule is then inserted into host organism to produce new genetic combination with higher medicinal, scientific or agricultural values.

Genetically modified bacteria are used for production of human insulin, which cause less immune reactions as compared to the pig or cow version of insulin.

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What is the correct order of classification from largest (most organisms) to smallest (least organisms - most specific)?
A. SGFOCPKD
B. OCKPDKGFS
C. KDPOCGFS
D. DKPCOFGS

Answers

Answer:

B

Explanation:


A car is traveling 75 miles per hour. How many hours would it take to
cover 250 miles? *
please help, i’ll mark brainliest!

Answers

250 / 75 = 3.33 hours.

Which area of this sound wave represents the greatest rarefaction?

Answers

Answer:

Its A i had hos question in usatestprep

Explanation:

Answer:

A represents a rarefaction

Explanation:

This is the area where the density of the wave is lowest.

PLS HELP i’ll mark brainliest !!!


1. Define celular respiration

2.What types of organisms use cellular respiration?

3 In which cell organele does most of aerobic celular respiration occur?

4.What are the reactants of aerobic celular respiration?

5.What are the end-products of aerobic cellular respiration?

6. What is the chemical equation for aerobic cellular respiration? How does it relate to the
chemical equation for photosynthesis ?

7. What are the 3 stages of aerobic cellular respiration? Where in the cell does each stage
occur and how many molecules of ATP are generated for each stage? Which stage generates
the most amount of ATP?

8. What types of organisms/cels utilize anaerobic celular respiration?

9. What are the two types of anaerobic respiration?

10. What is fermentation?
What organisms utilize fermentation?

11. Where in the cell does
fermentation take place?

12. What are the end-products of fermentation?

13. How many ATP molecules are generated during fermentation?

14. What types of organisms/cells utilize lactic acid anaerobic respiration? How many molecules
of ATP are generated by lactic acid respiration?

Answers

Explanation:

1. Cellular respiration is the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances.

2.Bacteria, Archea, Plants, Protists, Animals and Fungi.

3.Mitochondria-The eukaryotic cell structure where cellular respiration occurs.

4.Glucose reacts with Oxygen

5.Carbon dioxide and water

6.C6H12O6+6O2 yields 6CO2+6H2O+ energy.

it's the direct opposite of the photosynthesis

chemical equation.

7.Glycolysis-cytoplasm, 2 ATP.

Krebs cycle-mitochondria, 34 ATP.

Oxidative phosphorylation-mitochondria, 26 ATP.

Krebs cycle produces the most ATP.

8.Bacteria and Archaea.

9.Alcohol fermentation and lactic acid fermentation.

10.Fermentation is the process in which energy can be released from glucose even though oxygen is not available.

Many bacteria and yeasts.

11.The cytoplasm

12.alcohol, glycerol and carbon dioxide from yeast.

13.2 ATP

14.Bacteria, 2 ATP molecules.

The new idea however, became herbivores were not just controlled from the bottom, but they also had to be controlled from the top down by predators. This new idea was called what

Answers

Answer:

it sounds like the question is talking about Top-down control but i dk if that's the answer because it's in the question

please help i am give brinliest

Which of the following correctly matches a property of an organic molecule with how that property helps the organic molecule function in living organisms?

A. Carbohydrates lower the activation energy of certain reactions. This allows metabolic processes to take place at a rate that can sustain life.

B. Proteins contain nucleotides that encode genetic material. This allows proteins to accurately pass genetic information from one cell to another.

C. Nucleic acids contain multiple carbon-hydrogen bonds. This allows nucleic acids to provide energy for living organisms by breaking these bonds.

D. Lipids are insoluble in water. This allows lipids that make up biological membranes to regulate the entry and exit of many substances.

No dam links

Answers

Answer:

C. Lipids are insoluble in water. This allows lipids that make up biological membranes to regulate the entry and exit of many substances.

Explanation:

The Answer is c hope this helps you have a great day c is the answer

Two equal strips A and B were from a potato whose cell was 30% of sugar. The strip A was placed in a solution of 10% sugar concentration while B was placed in 50%sugar concentration. What change was expected in strip A and B​

Answers

Answer:

I don't know

sorry I didn't understand anything

Which of the following mutations would most likely be passed along to an organism's
offspring?

A. Mutation that occur during crossing over during the prophase stage of mitosis

B. Mutations that occur in both DNA strands synthesize do the S-phase of mitotic cell cycle

C. Mutations that involve translocation of chromosomes in gametes
during meiosis

D. Mutations that occur in Somatic cells During cell division

Answers

Mutations that involve the translocation of chromosomes in gametes during meiosis are likely to be passed to offspring (Option C). It is because mutations are inherited from germinal cells.

Mutations and Meiosis

Meiosis is a cell division by which a cell produces four daughter germinal cells having half of the genetic material.

Moreover, a mutation is any alteration in the genetic material of the genome of an organism.

Germinal mutations can be inherited because they occur in the germinal meiotic cells, whereas mitotic (somatic) cells are not inherited.

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How is wastewater used in water recycling programs? WILL GIVE BRAINLEST HELP ASAP
Answer Choices:
drinking water
sprinkler systems
virus filtration
chemical pollution

Answers

Sprinkler systems because there are signs next to them that say do not drink recycled waste water

Answer:

Sprinkler systems

which plant structure is most similar in function to a lizards eggs?

answer choices:
flowers

pollen

seeds

stems

(pls don’t guess or leave links)

Answers

Answer:I would say seeds, since it protects the bud of a flower and then the flower “hatches” from the seed and grows

Explanation:

The plant structure that is similar in functions to eggs is seeds. The correct option is C.

What are seeds?

A seed is an embryonic plant with a protective outer covering and a food reserve. The formation of the seed is a part of the reproduction process in seed plants, including gymnosperm and angiosperm plants.

Similarly, an egg is an oval or round object laid by a female bird, reptile, fish, or invertebrate that typically contains a developing embryo.

Bird eggs are protected by a chalky shell, whereas reptile eggs are protected by a leathery membrane.

Embryos are developing in seeds and eggs. Both provide food for the developing embryo. Both have protective coverings that keep them from drying out.

Thus, it can be concluded that the correct option is C.

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Answers

The answer would be b

Answer:

I believe it is b

please tell my if I'm right


(c) Based on the data in Figure 1, describe whether or how the size of the leopard population appears to have been affected by the lion population over the period for which data were analyzed. The scientists also estimated the consumed biomass of the prey animals of the leopards and lions. They estimated that the lions annually ate a total of approximately 175,000 kg of prey animals. This included approximately 110,000 kg of very large animals. Calculate, to the nearest whole number, the percent of the total biomass eaten by the lions that is composed of very large animals.

Answers

Answer: 62.9%

Explanation:

Figure one is not available so I cannot answer the first part of the question.

The second part however, has the relevant information required.

The percentage of large animals eaten by lions from the total amount of biomass eaten by lions is:

= Weight of large animals / Total weight of animals eaten by lions * 100%

= 110,000 / 175,000 * 100%

= 62.9%

pls help me out with this and thanks for the help

Answers

1.False2.True3.True

Explanation:

hope it helps:^❤

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