Answer:
1.Water is obviously essential for hydration and for food production—but sanitation is an equally important, and complementary, use of water.
2.Sedimentation.
Runoff.
Erosion.
Dissolved oxygen.
3.Ontario First Nation of Attawapiskat isn't safe. It has high levels of a chemical byproduct produced by the chlorination process in the community's ailing water plant that needs millions of dollars in repairs.
4.Boiling. This is a reliable way to purify water.
Use of Iodine solution, tablets or crystals. This is an effective and more convenient method. ...
Use chlorine drops. Chlorine has the ability to kill bacteria in water. ...
Use water filter. ...
Use Ultraviolet Light.
how does Pteromyzon differ from scolidon and labeo fishes?
who answer this question in 10 seconds I'll mark his or her ans. as "BRAINLIST ANSWER"
It's my promise but the answer must not be copied from internet
Answer:
Due to agnathous, no paired fins and scales.
Explanation:
Pteromyzon fish is different from scolidon and labeo fishes because Pteromyzon fish is not a true fish. The main reason for this is that Pteromyzon fish is agnathous means having no jaws and it doesn't have paired fins and scales on their body while all these features are present on the body of scolidon and labeo fishes so we can conclude from this discussion that Pteromyzon fish is different from scolidon and labeo fishes.
explain in details the mechanism of transportation in plants
Answer:
Plant transport systems move energy from leaves and raw materials from roots to all their parts. The xylem (tissue) moves water and minerals obtained from the soil to all other parts of the plants.
Explanation:
I hope I helped:)
How do humans generate energy when oxygen is not available?
a. Using Kreb’s Cycle only
b. Using the Electron Transport Chain only
c. Using alcoholic fermentation
d. Using lactic acid fermentation
Cnidarians do not have a nervous system like ours. a. How does it differ from ours?
Answer:
Cnidarians have nerve cells that are organized in a nerve net – a diffuse network where neurons interact wherever they cross one another.
Explanation:
Plants release a different gas back into the air. What is the name of that gas?What is the name of the gas that plants absorb from the air and use to grow?
how can pioneer species benefit the whole biological community?
Explanation:
"Over hundreds of years these “pioneer species” convert the rock into soil that can support simple plants such as grasses. These grasses further modify the soil, which is then colonized by other types of plants. Each successive stage modifies the habitat by altering the amount of shade and the composition of the soil."
Which of the following is a method used to obtain the relative age of a rock or fossil?
a
Decay rates
b
Radiometric dating
c
Superposition
d
Uniformitarianism
i know its not radiometric dating
Answer:
Radiometric dating
Explanation:
A chemical reaction that has the general formula of nA → (A)n is best classified as a
reaction.
Answer:
true
Explanation:
Answer:
Polymerization
Explanation:
A moth population living in a deciduous forest relies on camouflage to protect itself from predators. These moths typically vary in
color and are thus able to camouflage among both the light and dark-colored trees of the forest. However, as soot emitted from
nearby factories darkens the forests trees, the moth population begins to evolve. Which of the following distribution graphs best
represents the evolution of this moth population?
The distribution of graph A best represents the evolution of this moth population.
What do you mean by Evolution?Evolution is defined as the process of growth and development or the theory that organisms have grown and developed from past organisms.
As soot emitted from nearby factories darken the trees of the forest, it is better to camouflage dark to escape from predators. And in this way evolution of the moth population takes place.
Therefore, the distribution of graph A best represents the evolution of this moth population.
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The formation of an ionic bond involves the
Select one:
O sharing of neutrons.
sharing of protons.
transfer of neutrons
transfer of electrons
Answer: transfer of electrons
Explanation:
9.Supposed 100 ants live in an & square cenoneter cs: pot gasswould be the population density of the ants?
A.12.5 per cm²
B.12.6 per cm²
C.12.7 per cm²
D.12.8 per cm²
January comes once in 12 months. Saturday comes once in seven days and 12 noon comes once each day. How is this like the frequency of a wave?
The following RNA strand was produced:
5′ AAA AUG AGU AAG 3′
Which of the following DNA strands could have been the template for this RNA?
Choose 1 answer:
(Choice A)
3′ AAA ATG AGT AAG 5′
(Choice B)
3′ UUU TAC UCA UUC 5′
(Choice C)
3′ TTT TAC TCA TTC 5′
(Choice D)
3′ TTT ATG TGC TTC 5′
Answer:
Choice 3
Explanation:
Because T corresponds with A and the letter could have been an option but the letter U cannot be in a DNA strand
If two objects are moving at a constant speed with the same velocity, what will make the
velocity change?
Answer:
The velocity can change by changing the direction
Explanation:
If the direction changes, then the velocity changes even though the speed is constant. Hope this helps!
7.) DURING THE FIRST ERA, THE __________ ORGANISMS EVER ON EARTH WERE
ERA, THE FIRST LIVING
Answer:
The first living organism on Earth are Bacteria in the first era.
Explanation:
Bacteria are the first organism to leave be on Earth. They came into existence about 3.5 billion years in the first era in the waters of small oceans. Then there were anaerobic hetetrophic bacteria because the atmosphere was free of oxygen before. Cyanobacteria then became the first autotrophic organisms and first photosynthesizer that release oxygen to the atmosphere after photosynthesis.
What do living things need to live and grow?
Answer:
All living things need some form of water. Most need oxygen.
Explanation:
What types of cells have cell walls ?
The type of cell that possess cell wall is plant cell. The correct option is A.
What is cell wall?A cell wall is a structural layer located just exterior the cell membrane that surrounds certain types of cells.
It can be tough, flexible, along with being rigid at times. It basically aids structural support as well as protection to the cell, as well as acting as a filtering mechanism.
The cell wall is made up of a network of cellulose microfibrils and cross-linking glycans embedded in a matrix of pectin polysaccharides that is highly cross-linked. Lignin can be found in secondary cell walls.
Plant cell walls, as the interface between adjacent cells, frequently play important roles in intercellular communication.
Plant cell walls play an important role in plant-microbe interactions, including defense responses against potential pathogens, due to their surface location.
Thus, the correct option is A.
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Your question seems incomplete, the missing options are:
Plant cell.Muscle cells.Blood cells.Animal cells.Please help worth 95 points. Project: Algae Cultures: Directions
In this report, you will be researching the different types of algae. Report on one algae from each of the three categories (blue-green, green, and green-brown). Include the following information: Name of the algae, Category if falls under, Where it is mostly found and what conditions it needs to survive, Whether it is unicellular or multicellular, Where in the food chain algae are, and what predators it may have, Research why some scientists think algae should be classified plants, and explain the debate.
1.Which organisms did you identify 2. How easy or difficult was it to find an example of each category? Which one was the hardest to find? Why? 3. Which environments were most common to find algae in? Why do you think so? 4. What part of the food chain is the alga? 5. Why is algae classified in the Protist Kingdom and not the Plant Kingdom even though they are photosynthetic? Research why scientists feel they should be classified as plants.
Answer:
1) I identified the Golden-Brown Algae.
2) It was very easy to find the category because of the solid color base and because it only had the daitoms. It did not have multiple like the Green Algae and the Blue-Green Algae.
3) In fresh, brackish or salt water. They are found both in tropical lakes and seas, and in the alpine and polar snows. They are unicellular or multicellular protist plant organisms, whose cells do not form tissues and lack flowers. They are considered the first link in the food chain in the aquatic environment. They are found in fresh, brackish or salt water. They are primary producers in the food chain, capable of producing organic substances through photosynthesis, so they use sunlight. They are found in tropical lakes and seas up to the alpine and polar snows.
4) Producer Alga is A plant and produces food for other organisms.
5) Algae (Euglena) do photosynthesis as plants do. They also move around and eat, as do animals. But they are unicellular. In order to be classified as a plant or animal, an organism has to be multicellular, made of more than one cell. Since it is a unicellular organism with some plant and animal characteristics, it is called a protist. Plant cells have walls while algae does't have one, so it is a protozoan. Algae resemble the protozoa, so they are put into the Protist Kingdom.
Explanation:
I had the project.
Algae recreate a major part of the marine ecosystem because they exist as the decomposers current in the marine ecosystem; any harm to them could cause an inequality in the whole marine ecosystem.
What are golden-brown algae?1)The Chrysophyceae, usually named chrysophytes, cryptomonads, golden-brown algae or golden algae exist as an extensive set of algae, seen mainly in freshwater.
2) It stood very easy to see the class because of the solid color base and because it only contained the diatoms. It did not contain multiple like the Green Algae and the Blue-Green Algae.
3) In fresh, saline, or salt water. They exist seen both in tropical lakes and seas and in the alpine and polar snows. They exist as unicellular or multicellular protist plant organisms, whose cells do not constitute tissues and absent flowers. They exist thought the first link in the food chain in the aquatic environment. They exist seen in fresh, brackish, or salt water. They exist as primary producers in the food chain, qualified of producing organic substances through photosynthesis, so they utilize sunlight.
4) Producer Alga exists in a plant and makes food for different organisms.
5) Algae (Euglena) accomplish photosynthesis as plants do. They even move about and eat, as do animals. But they exist unicellular. To be categorized as a plant or animal, an organism contains to be multicellular, made of better than one cell. Since it stands as a unicellular organism with some plant and animal elements, it exists named a protist. Plant cells contain walls while algae don't contain one, so it exists as a protozoan. Algae reach the protozoa, so they stand to put into the Protist Kingdom.
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In the experiment, which of the following variables should remain consistent?
the types of plants used
the temperature of the water and vinegar
the type of soil used
All of these choices are correct.
All of the above is correct
What is a major difference between DNA replication and DNA transcription?
A. RNA molecules produced by transcription are much shorter in length than DNA molecules produced by replication.
B. DNA replication involves the nitrogenous base uracil, while DNA transcription involves the nitrogenous base thymine.
C. DNA transcription only occurs in multicellular organisms, while DNA replication occurs in all organisms.
D. DNA replication takes place in the nucleus, while DNA transcription takes place in the cytoplasm.
Answer: Your answer is A
Explanation: I just took the test
What is the main feature of frog?
Answer:
In general, frogs have protruding eyes, no tail, and strong, webbed hind feet that are adapted for leaping and swimming. They also possess smooth, moist skins. Many are predominantly aquatic, but some live on land, in burrows, or in trees. A number depart from the typical form.
How does biology affect behavior?
Answer:
some behaviors may have a genetic basis, but genes do not actually control behavior. Rather, our genetic makeup influences how we interact with and respond to our surroundings.
Explanation:
There you go
Read the quotation below from a high school science student.
We used a formal method of study to figure out which kind
of grocery bag had the least effect on the environment.
What is the student describing?
O A. Using scientific tools
B. Making random discoveries
C. Using the scientific method
D. Making a conclusion
Answer:
C. Using the scientific method
If a sample originally had 120 Adams of carbon 14 how many atoms will remain after 17,190 years
Answer:
15 atoms
Explanation:
About 15 atoms out of the 120 Adams would remain.
Generally, the half-life of a substance is the time it takes for one-half of that substance to disintegrate.
Carbon 14 has a half-life of approximately 5,730 years. 17,190 years means that the sample had stayed for 17,190/5,730 which is equal to 3 carbon-14 half-lives.
Out of 120 Adams,
the first half-life will reduce 120 to 60 Adamsthe second half-life will reduce 60 Adams to 30 Adamsthe third half-life will reduce 30 Adams to 15 Adams.Hence, at the end of the 17,190 years, approximately 15 Adams would remain.
A cactus with the genotype Kkww is crossed with a cactus with the genotype KKWw. Which of the following genotypes will be shared by 25% of the offspring?
A. KKWW
B. kkWw
C. KKww
D. KkWW
Answer: C
Explanation: Think of it this way, which ever has the most is what answer would be. So they come across 3 capitals with K its gonna be KK not kk.
Hope this helps
The genotype is defined as the genetic makeup of an organism, or the set of alleles. The cross between Kkww and KKWw will result in 25% of the progeny having genotype KKww.
The correct option is:
Option C. KKww
Find the attachment for the Punnett square, given below.
The cross between Kkww and KKWw will result in the gametes as:
Kkww - Kw, Kw, kw, kwKKWw - KW, Kw, Kw, kwThe progeny having genotype as KKww will be 4 or 25%.
Therefore, Option C is correct.
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Which of the following processes provides the link between solar energy and multi-cellular life on earth?
Answer:
Out of "the", "following", and "processes" The answer is simply solar energy to life "Processes"
Explanation:
Select the correct bisector of the segment.
B
A
B
B
B
А
M
B
B
D
Answer:
C
Explanation:
it has the example figure number 7 and also it has the correct bisector
What happens to the cells at the edges of an injury when a cut in the skin or a break in a
bone occurs?
Explanation:
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When an injury such as a cut in the skin or a break in a bone occurs, cells at the edges of the injury are stimulated to divide rapidly. This action produces new cells, starting the process of healing.
Explain how autotrophs need both cellular respiration and photosynthesis
Answer:
They get energy from food. Autotrophs make their own food through the process of photosynthesis, in which light energy from the sun is changed to chemical energy that is stored in glucose. And as for cellular respiration, all organisms use it to break down glucose, release its energy, and make ATP.
Explanation:
_____________
What are two tools that can be used to measure wind direction?
Answer:
it should be a wind vane and an anemometer.
Explanation:
The anemometer measures wind speed and the wind vane helps determine what direction the wind is coming from.