Answer:
respiratory system
Explanation:
The function of the respiratory system is to move two gases: oxygen and carbon dioxide.
Answer:
A.They created a record of life on Earth.
B.They grouped organisms by their similarities.
C.They grouped organisms by the period in which they existed.
Explanation:
Did the test hope this helps
Neither of these are minerals, B.
Its not A because, they are not natural materials but instead made up of natural materials, like a rubber tree.
Its not C because, like I said, plastic is made from rubber trees, this garentees it doesnt have a crystal structure.
Its not D because, concrete is not a mineral and has indefinite composition.
Fitness is the quantitative representation of natural and sexual selection within evolutionary biology. It can be defined either with respect to a genotype or to a phenotype in a given environment.
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A related or common origin or property of an element in the chemical bond.
