He animals in the food web release into the environment, which plants then use for

carbon dioxide:photosynthesis

Explanation:

carbon dioxide:photosynthesis During respiration, oxygen is used to breakdown glucose and produce energy. One waste product of respiration is carbon dioxide. Plants use carbon dioxide during photosynthesis and release oxygen as a by-product. Plants also need water for photosynthesis, but they get the water through roots or root-like structures.

the answer is c) an oak tree

phaneritic textures in which phaner means visible so phaneritic textures are standard of impertinent volcanic rocks. these rocks crystallized gradually under the surface of earth. when the magma cools deliberately then the ores have chance to develop and produce long crystals.