Carbon is introduced into the atmosphere by

all EXCEPT which of the following means?
a. respiration
b. diffusion
c. burning of fossil fuels
d. wind erosion of rocks
e. tilling of soil


D

Biology & Microbiology

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Immunization against endemic diseases is NOT necessary when traveling outside of one's home country or region

Indicate whether the statement is true or false.

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Which statement supports the theory that all organisms are related?

A) The genetic code is almost universal. B) All flies have two wings. C) Body parts with similar functions in different species are determined by unrelated genes. D) Prokaryotes have circular chromosomes.

Biology & Microbiology

Human evolution began with the first hominids during the Jurassic period.

a. true b. false

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What is the role of cleavage in the early embryo?

A. Extrude polar bodies B. Create germ layers C. Make the embryo larger D. Produce bigger cells E. Produce many cells

Biology & Microbiology