Answer:
population density is the answer of the question

Hi pulil here is your answer :::
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1》The answer of the First question is option A Diffusion.
The net movement of the molecule from a region of higher concentration to the reagion of lower concentration is called diffusion. And in this case also this process is takong place. So the answer is Diffusion.
2》The answer of the Second question is also Option D Diffusion.
Diffusion is the process of movement of molecules from higher to lower concentration.
So, uour answer is Diffusion.
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Hope this helps .........
Answer:
The answer is A.Primary succession
Explanation:
Primary succession is an ecological succession that begins in essentially lifeless areas, such as regions in which there is no soil or where the soil is incapable of sustaining life (because of recent lava flows, newly formed sand dunes, or rocks left from a retreating glacier).
Electron pairs , because the atoms become stable by gaining the electron pairs
The carbohydrates, fats and proteins we eat and drink provide calories for us (and alcohol as well if we choose to consume it). Sometimes people refer to these nutrients as "energy yielding".