Answer:
Ecological succession
Explanation:
This is the process that describes how the structure of a biological community changes over time. This is an interacting group of various species in a desert, forest, marine environment, etc.
Answer:
the amount of calcium is variable.
Explanation:
osteoporosis is an illness that is caused by lack of calcium in a person's body.
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Answer:
Ducks, pelicans, crocodiles, platypuses, along with some frogs, dogs, and cats.
Answer:
because the trigger for this is commonly encountered like a change in temperature
