Each year, plants and algae remove approximately _______ of the CO2 in the atmosphere.
A. half
B. all
C. 1/7th
D. 1/5th
E. 1/50th
C. 1/7th
Biology & Microbiology
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The rate at which evolution is occurring cannot be estimated by:
A. studying comparative anatomy. B. inferring that apes are related to humans. C. measuring the degree of difference in genetic coding. D. interpretation of the fossil record.
Biology & Microbiology
The cell junction labeled “B” in the figure
a. prevents movement of materials between cells. b. allows passage of a signal to contract heart muscles. c. allows the free passage of materials between cells. d. is found mostly in stomach tissue. e. is found in most tissues except heart muscle.
Biology & Microbiology
Intramembranous ossification step 1
What will be an ideal response?
Biology & Microbiology
Performance at extreme temperature can acclimate.
a. true b. false
Biology & Microbiology