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alekssr [168]
2 years ago
13

A balloon is filled with air. If the balloon is then left out in the sun and warms up, what do you expect to happen?

Biology
1 answer:
ale4655 [162]2 years ago
8 0

Answer:

A: The balloon expands

Explanation:

Since the heat is absorbed by the balloon, the molecules inside will spread apart.  When this happens, the balloon will also expand as the molecules expand which therefore the balloon grows.

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___________ refers to the living parts of an ecosystem.​
almond37 [142]

Answer:

Living components...

Explanation:

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3 years ago
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Scientists calculated the net primary productivity at two different forest sites. Both forests have the same gross primary produ
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Answer:

The answer is C.

Explanation:

Net Primary Productivity is a term that is used to express the difference between CO2 that is taken in by the plant with photosynthesis minus CO2 that the plant releases.

The two forest sites given in the example may not have the same biodiversity and the same species of plants so we can't be sure of option B.

Again for the same reasons, we can't be sure of option D because we do not know the specific plant species in each forest since they are in different areas.

Option A can be ruled out for the same reasons, the lack of information about the forest sites, since we do not know the death rate of the plants in either of the forests.

Option C can be true because forest A has a higher net primary productivity rate which can be an indication of lower respiratory activity hence lower CO2 production, resulting in the given higher net primary productivity.

I hope this answer helps.

4 0
3 years ago
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Molodets [167]

Answer:

Cells come from other living cells

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Venus is sometimes referred to as Earth's twin. Why?
Rashid [163]

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They are about the same size and have about the same mass.

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Basically both planets are about the same size therefore that is why Venus is called Earth's twin.

5 0
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How is osmosis different from diffusion
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Diffusion is a spontaneous process in which molecules move with their concentration gradient. For example, if you place food coloring in water, the food coloring will slowly diffuse through the water until the entire solution has been balanced.

Osmosis is specifically the movement of <em>water</em> through a semipermeable membrane - meaning a membrane that can let some substances in but keep others out - and, similar to diffusion, it moves with its concentration gradient. For example, if you place a glucose solution sealed in plastic in water, water will move into the plastic to even out the concentration of glucose in the entire solution because glucose is too large to diffuse freely.

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