All of the following would have been energy sources on primitive Earth EXCEPT 

A. ultraviolet light.
B. heat.
C. oxidation of organic molecules.
D. sunlight.


C. oxidation of organic molecules.

Biology & Microbiology

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Mendel's work involved plants that showed incomplete dominance.

a. true b. false

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Cryptic coloration advertises a species unpalatability to potential predators

____________________ Indicate whether the statement is true or false.

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The heart, skeletal muscles, and blood vessels all contain muscle tissue.

Answer the following statement true (T) or false (F)

Biology & Microbiology

A genetic cross between two individuals who are heterozygous for two traits of interest is called a(n) ________

Fill in the blank(s) with correct word

Biology & Microbiology