False, due to pollution and greenhouse gasses, although trees do absorb Co2, the air is still not ballenced. Trees help, but not enough.
Answer:
True statement
Explanation:
What is the main function of the cell membrane?
Answer:
It controls the movement of dissolved substances in and out of the cell.
Explanation:
It is said to be semi-permable
Help asap!!! marking brainliest!
Answer:
D. Bacteria does not depend on a host. Bacteria are free-living cells.
HELPPP
4. What two variables are necessary to calculate population growth?
birth rate and death rate
Ogrowth rate and carrying capacity
Obirth rate and growth rate
growth rate and death rate
Answer:
Birth rate and death rate
Explanation:
Birth rate will decrease and death rate will fluctuate and they will balance the other out.
What is the largest source of water on Earth?
A.Seawater
B.Freshwater
C.Groundwater
D.Frozen water
Groundwater is one of the largest source of water on Earth.
What was Hans Molisch’s hypothesis?
Answer:
Molisch’s test is a chemical test which is used to check for the presence of carbohydrates in a given analyte. This test is named after Czech-Austrian botanist Hans Molisch, who is credited with its discovery. Molisch’s test involves the addition of Molisch’s reagent (a solution of ∝-naphthol in ethanol) to the analyte and the subsequent addition of a few drops of concentrated H2SO4 (sulphuric acid) to the mixture.(ONLY ANSWER IF YOURE GOOD AT SCIENCE, NO SPAM!!) Bacteria play many roles in nature. How do they affect us? From the list below, select all of
the choices that correctly describe roles of bacteria.
Select all that apply.
A aiding with digestion in the human gut
helping plants obtain nitrogen
с
breaking down decaying matter
D
causing human disease
E producing true tissues
F
forming true organs
being genetically engineered to produce products
Answer:
A, C, D (as far as I know, however I might have missed something or added something)
Which testing method is considered better than traditional chemical analysis testing?
methods of analyzing trace evidence are more accurate, faster, and can be automated. These include mass spectroscopy, infrared spectroscopy, and gas-liquid chromatography.
The Trace Materials Unit uses methods and techniques to predict items of evidence. Instrumental methods are considered faster in providing results as compared to traditional chemical analysis.
What is the Instrumental method?Instrumental analysis is a field of analytical chemistry that helps to investigate analytes using some sort of scientific instrument.
Many of the instrumental methods can be done for both qualitative and quantitative analysis.
The major categories of instrumental methods are as follows:
Spectral. Electroanalytical. Separatory.Instrumental methods are considered much faster at producing results as compared to traditional chemical analysis. This factor is often important during a crime investigation.
Thus, the instrumental method is considered better as compared to chemical analysis.
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Definition for chemical formula.
Which situation does NOT describe a function of the reproductive system?
ensures species survival
regulates the menstrual cycle
allows sperm and eggs to combine
Answer:
regulates the menstrual cycle
Explanation:
The other 2 answers are apart of the reproductive system
Use the drop-down menus to complete each sentence.
А
is an organism that eats other organisms to gain energy, it is also called
A
v is an organism that makes its own food; it is also called
v is an organism that breaks down waste and dead organisms.
А
Answer:an organism who make its own food is autotrophic
Explanation:
Which of the following IS NOT a function of the skeletal system?
O Protecting the body from pathogens
O Producing blood cells
O Storing minerals
O Providing attachment
Answer:
A) Protecting the body from pathogens
Question 9 of 10
Sound wave A has a higher pitch than sound wave B. What must also be true
of these two waves?
O A. Wave A has a higher frequency than wave B.
B. Wave A has a lower frequency than wave B.
C. Wave A is softer than wave B.
O D. Wave A is louder than wave B.
Answer:
wave A has a higher frequency then wave b
Explanation:
test
The true statement regarding the two sounds is Wave A has a lower frequency than wave B. Thus, option "B" is correct.
What is the pitch of a sound?The pitch of a sound is the sensation of the sound frequency.
A high pitch sound corresponds to a high-frequency sound wave and a low pitch sound corresponds to low frequency.
Sound of the same amplitude has the same loudness.
Thus, option "B" is correct.
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name the five senses and their sense organs
Answer:
The Senses are:which one of these animals has the lowest fertility of offspring?
a) insects
b) worms
c) fish and aquatic animals
b) mammals
Answer:
I think it is Mammals
am only 85% sure of the answer am giving you
Tapeworms enter the human stomach through food. They feed on nutrients in the stomach and cause infections in the body. What does this association depict?
Answer:
Tapeworms are a parasite of humans
Explanation:
Tapeworm infection is caused by ingesting food or water contaminated with tapeworm eggs or larvae. If you ingest certain tapeworm eggs, they can migrate outside your intestines and form larval cysts in body tissues and organs (invasive infection).
PLEASE ANSWER 60 POINTS
Which is an example of genetic drift?
A. Artificial selection creates vegetables resistant to insects.
B. Allele frequencies change randomly each generation.
C. Females choose mates, resulting in large males.
D. Polygenic traits change due to directional selection.
Answer:
Allele frequencies change randomly each generation is the example of genetic drift.
Surface weather map
Please help
Answer:
the file is below
Explanation:
The food web models a community along the coast of Alaska. Which
organism in the food web is a carnivore?
bald eagle
sea otter
sea gul
sea urchin
fish
mussel
rat
rock ptarmigan
zooplankton
kelp
phytop ankton
plants
O A. Phytoplankton
O B. Rock ptarmigan
O C. Zooplankton
O D. Sea otter
Answer:
Sea otter
Explanation:
The rest of the organisms on that answer list are too small to be carnivores, Hope this helps.
How could you tell whether a given sequence was DNA or mRNA?
Was it easier to decode messages written in DNA or in mRNA sequences?
Which cellular enzymes or machines are you imitating when you "transcribe" DNA into mRNA?
Which cellular enzymes or machines are you imitating when you "translate" mRNA into a chain of amino acids?
What else needs to happen in a eukaryotic cell between the processes of transcription and translation?
In step 5, how did different mutations affect the amino acid sequence that was encoded?
Explain why some single nucleotide mutations affect an amino acid sequence and some single nucleotide mutations do not.
Explain why nucleotide insertions and deletions affect the amino acid sequence so profoundly.
Why could your secret message include only 20 of the 26 letters of the alphabet?
Did you find that it was difficult to work with only these letters?
Answer:
1. You could tell whether a given sequence was DNA or mRNA because of Uracil and Thymine base differences in both
2. Answers may vary up to you, but messages are easier to decode written in DNA
3. You are imitating RNA polymerases.
4. You are imitating RNA polymerase once again
5. The RNA strand is delivered to start the process of translation; RNA>>Protien
6. Different mutations affect different amino acid sequences because they alter the code which makes it un-easy to decode the sequence
7. Some single nucleotide mutations affect an amino acid sequence depending on what mutation it is causing. Some single nucleotide mutations do not do this because they aren't as severe and they don't cause codons to mix up.
Answer:
1
ADNA sequences use the nucleotides A, T, G, and C, while mRNA sequences use the nucleotides A, U, G, and C.
B It was easier to decode the messages written in mRNA sequences because these sequences could be translated directly into the amino acid sequence.
2
A The cellular enzyme that carries out transcription is RNA polymerase.
B The cellular machine that carries out translation is the ribosome, which is composed of both rRNA and ribosomal proteins.
C In a eukaryotic cell, an mRNA transcript often has additional untranslated regions and a poly-A tail. A eukaryotic mRNA transcript would need to be transported from the nucleus to the cytoplasm before it could be translated.
3
A Some amino acids are encoded by several codons. If a single nucleotide mutation still encodes for the same amino acid, the resulting amino acid sequence would not be affected. This happens most often with nucleotides in the third position of a codon.
B If a single nucleotide mutation changes the amino acid encoded, the resulting amino acid sequence would be affected. This happens most often with nucleotides in the first and second positions of a codon.
C Nucleotide insertions and deletions cause frameshift mutations, which change the reading frame of translation and will encode completely different amino acids from that point forward.
4
A There are only 20 canonical amino acids, so the letters B, J, O, U, X, and Z are not used as one-letter codes.
B It was a little difficult to not use the letters B, J, O, U, X, and Z at first, but there are messages to write without these six letters.
Explanation:
Overall, bottle bills have not been a very successful financial incentive to reduce waste.
True
False
Answer:
false
Explanation:
What do the depositional plains and the erosional plains have in common
In both erosional and depositional plains, there is the movement of soil from one point to another.
What is an erosional plain?An erosional plain is formed when rock moves unto a higher area. It is different from depositional plains in which debris move away.
Hence, in both erosional and depositional plains, there is the movement of soil from one point to another.
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An object that can be easily formed into any shape is
Answer:
A liquid, and example is water, since it can form into the shape of its container.
Explanation:
Answer:
the answer is clay,for sure
B. What are two reasons that this layer can contain so much water vapor? (2 points)
The two reasons that this layer ( Troposphere ) will contain much water vapor are :
AltitudeAir compressibility The layer of the atmosphere with the most water vaporThe troposphere contains so much of the water vapor present in the atmosphere due to gravity and the compressibility air. As we move higher above the earth surface, the density of the atmosphere decreases rapidly. causing the majority of water vapor to be retained at the troposphere. which is lowest part of the atmosphere closest to the earth surface.
Hence we can conclude that The two reasons that this layer ( Troposphere ) will contain much water vapor are : Altitude and Air compressibility.
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The picture shows a scientist collecting data from an ice core: What kind of data can be collected from ice cores to learn about past climates?
A. humidity
B. air pressure
C. amount of carbon dioxide in the air
D. ocean surface temperature
Ice core can tells various information regarding the atmosphere. It can reveal the temperature, precipitation, and other atmospheric conditions. Here in the image, the scientists can learn about the ocean surface temperature, i.e., option D.
What is an ice core?Ice cores are ice-drilled cylinders made from ice sheets and glaciers.
They are capsules that are frozen and allow scientists to reconstruct climate far into the past.
It can be used to detect the ocean surface temperature.
Thus, the correct option is D.
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(plate tectonics) HELP PLEASEE ILL GIVE BRAINLIEST
Answer:
Plate tectonics is the theory that Earth's outer shell is divided into large slabs of solid rock, called “plates,” that glide over Earth's mantle, the rocky inner layer above Earth's core. Earth's solid outer layer, which includes the crust and the uppermost mantle, is called the lithosphere.
47.
Base your answer to the question on the diagram below and on your knowledge of biology. The diagram represents
interactions between organisms in an ecosystem.
Species
D
Species
E
Species
A
Species
с
Species
B
Which statement correctly describes an interaction that contributes to the stability of this ecosystem?
A. Species E is not affected by the activity of species A.
B. Species B returns compounds to the environment that may later be used by species C.
C. Species C recycles nutrients from species B and D to obtain energy.
D. Species D is directly dependent on the autotrophic activity of species B.
An interaction that contributes to the stability of this ecosystem is: B. Species B returns compounds to the environment that may later be used by species C.
What is an ecosystem?An ecosystem simply refers to a biological community that is made up of species of living organisms (biotic factors) and the physical environment (abiotic factors) in which they exist and all interact.
Based on the schematic diagram shown in the image attached below, we can logically deduce that an interaction which contributes to the stability of this ecosystem is that Species B returns chemical compounds to the environment that may later be used by species C.
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An anti-antibody is an antibody directed against ____________________.
Answer:
ANOTHER ANTIBODY MOLECULE OR A
Explanation:
I just know
what will happen to the temperature in your decomposition layer if decomposition actually occurs in your ecocolumn?
A: Stay the same
B: Increase
C: Stay exactly 75 degrees Fahrenheit
D: Decrease significantly
Explanation:
the temperature of that layer will increase.
Which statement is true about DNA? (1 point)
ONLY ANSWER IF YOU KNOW!! NO SPAMS :)
Answer:
The answer is Mycellium.
Explanation:
Hope this helps! :)
Answer:
D
Explanation:
I'm pretty sure this is the answer
(Love your pfp btw)