In the first one draw the molecules closer together and in the second one draw them more diverse and farther apart hope that helps
It is called ecological succession, which can take up to a decade. It is a process of change in the species structure that occurs after a vast loss or extinction. Ecologists study how complexity is evident when a community is formed or occurrence takes place from an empty land or bare soil.
The elodea is getting the carbon dioxide from its environment like when underwater animals breathe out carbon dioxide the plants will use that carbon dioxide. The plants can also get the carbon dioxide from the atmosphere which can "dissolve" in water.
<span>Decomposition reaction is where an organism undergoes breakdown into simpler molecules and compounds. This is caused by other biotic and abiotic factors in the environment. Simply, decomposition is part of a cycle where a complex compound is breakdown and used again for complex reconstruction of other organic processes. </span>