Answer:
Dispersal time
Explanation:
The larvae of flies feed on the corpse and moult into three instars. There is rapid loss in the corpse weight and the post feeding maggots begin to leave the corpse. In order to find a suitable site for pupariation they migrate some distance away from the corpse.
1) The level of Carbon dioxide grows with the emission of CO2 by humans, animals and by human activity but it's kept stable by the process of photosynthesis, for which plants need carbon dioxide, so they consume it
2) Oxygen is consumed by humans and animals, so its level would go down, but again: plants create new oxygen through photosynthesis
So the answer is: plants that undergo photosynthesis
Facilitated diffusion of substances crossing the cell (plasma) membrane takes place with the help of proteins such as channel proteins and carrier proteins.
The carrier proteins<span> facilitate diffusion of molecules across the cell membrain</span>