Answer:
Energy flows in one direction, and matter cycles through the environment.
Explanation:
• Energy passes on from the producers (plants) up to the final consumer who absorbs it all. When final consumer dies, also energy collapses. So, more energy will be required hence a new cycle begins.
• Matter such as nutrients are taken up from primary consumers to the final consumer. When final consumer dies, its nutrients decompose are reused by the producers hence cycle repeats again.

toxins
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Answer:
Mitochondria are thought to have evolved from free-living bacteria that developed into a symbiotic relationship with a prokaryotic cell, providing it energy in return for a safe place to live.
Explanation:
As in terms of the first one. ants are exerted by less gravity then us humans and this hesbily tskes part in hiw much things weigh to us the more mass the more gravity. hope this helped
Answer:
The answer is:
Independent: red meat eaten by a person
Dependent: iron in the blood
Explanation:
A dependent variable has to depend on something else, so in order for a dependent variable to exist or happen, there has to be the independent variable. The independent variable is something that does not need anything else to happen for it to take place. It s independent. Such as, a mother cannot have a child without sperm. The mother have a child is dependent, where the sperm is independent.