According to Evolutionary Theory, Every Species Has Two Long-Standing, Biologically

question 26

True/False

According to evolutionary theory, every species has two long-standing, biologically based drives: survival and reproduction.

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Definitions:

Atomic

Relating to atoms, the smallest constituent unit of ordinary matter that constitutes a chemical element.

Mass Number

The total number of protons and neutrons in an atom's nucleus.

Isotopes

Variants of a particular chemical element that differ in neutron number, and consequently in nucleon number, but have the same number of protons in their nuclei.

Atomic Number

The number of protons found in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.