Answer:
C. Under the age of 20
Explanation:
Look at the graph and find what letter the male's bar is larger than the female's. You can see that it's letter B. Then, look at the legend and find what ages lay under letter B. It is C., under the age of 20.
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Answer:
D. ususally very abundant in an ecosystem
Explanation:
Most commercial phosphorus is produced by mining and heating calcium phosphate. Phosphorus is the eleventh most abundant element in the Earth's crust
What do you realize approximately ecosystems: An ecosystem is a geographic area in which flowers, animals, and different organisms, in addition to climate and landscape, paint collectively to form a bubble of existence.
Ecosystems incorporate biotic or residing, components, as well as abiotic elements, or nonliving elements. Biotic factors include flowers, animals, and different organisms.
Ecosystems have lots of various dwelling organisms that interact with each differently. The living organisms in an environment may be divided into three categories: producers, consumers, and decomposers. they're all important elements of an atmosphere.
All ecosystems require strength from an outside source – that is usually the sun. An atmosphere ought to comprise manufacturers, customers, decomposers, and useless and inorganic count. All ecosystems require power from an external supply – that is generally the sun.
Learn more about Ecosystems here:
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