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Vika [28.1K]
4 years ago
12

To osmoregulate in fresh water, a fish must _______ salts and produce _______ amounts of _______ urine.

Biology
1 answer:
Stells [14]4 years ago
8 0

Answer:

conserve; copious; dilute. (Ans. C).

Explanation:

Osmosis is defined as where a weak solution will always try to gain a strong solution, and dilute it until the balanced concentration is reached. Freshwater fishes surrounding environment is contain weak solutions compare to their internal fluids, so the water is trying to invade the fish body internal fluids.

Fishes have kidneys which helped them to process large amount of fluid, and are able to pass diluted urine from the body. Because fishes urine is diluted in nature they are able to conserve salt while lots of fluids passing away from body.

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A biologist is studying the possible role of earthworms on the fertility of farm soils. As part of this research, the number of
dimaraw [331]

Answer:

Taking more samples from different parts of an acre.

Explanation:

Validity and accuracy of the data is crucial for any serious research. In this particular case, the most accurate data would be obtained if earthworms would be counted on the whole acre. Of course, this would consume lot of time, people, money etc. That's why methods for estimation are used. Estimation best works with large number of samples. Since one acre equals over 4000 square meters, taking only five samples from such a big area is simply not enough for obtaining valid data.

One of the possible ways to improve estimation is to take more samples per acre while avoiding taking adjacent samples because it could be possible that number of earthworms in one part of an acre is increased (or decreased) for any reason, which would lead us to wrong conclusion.

8 0
4 years ago
What are your thoughts on climate change? Explain 4-5 sentences
densk [106]

Answer:

I think climate change can be either fake or real. I do believe temperatures are rising, but if you look at the history of the earth, it's gone through many ice ages and changes, so I would assume that it is no big deal. There is no evidence that temperatures are rising at a deadly rate, but weather has been unpredictable for a while now. Then again, these are my thoughts on climate change, so I'm not sure if I'm right or wrong. Hope I gave some useful information!

Explanation:

4 0
3 years ago
What would happen if a cell went through mitosis but not cytokinesis
TEA [102]
You end up with a polyploid condition. Not uncommon in organisms, especially plants, like angiosperms.
Look up "polyploidy".
8 0
4 years ago
The large pacinian corpuscles in the skin are an example of free/naked nerve endings.
Crank
<span>They are mechanoreceptors that detect pressure, and are found in the skin and also in joints and tendons. Naked nerve endings lie in the centre of the corpuscle surrounded by concentric layers of connective tissue separated by viscous gel.


Looks like an onion.
</span>
6 0
4 years ago
Firewood is made up of cellulose, which is a polymer of glucose molecules. When burning, heat and light are given off, indicatin
skelet666 [1.2K]

Answer:

Exergonic reaction

Explanation:

  • A chemical reaction which is associated with a release of energy and thus, is associated with a negative free energy change is said to be an exergonic reaction.
  • An exergonic reaction owing to the negative free energy change is a spontaneous reaction.
  • The energy that is released in the exergonic reaction is usually observed  in the form of heat and light.
  • The energy is released due to the breaking of the chemical bonds.
  • Therefore, on burning of the firewood the bonds between the glucose molecules break up which leads to the release of energy in the form of heat and light and this is thus, an example of an exergonic reaction.
7 0
3 years ago
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