In 2012, the Midwest experienced unusually hot, dry conditions for long periods during the

summer months. As a result, many plants suspended or reduced their growth and
reproduction, which had major implications for agricultural crops such as corn. This response
to environmental conditions is called __________.



a. dormancy
b. hibernation
c. niche tradeoffs
d. both dormancy and niche tradeoffs


A

Biology & Microbiology

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A population of mostly ____ individuals with a ____ generation time and a ____ proportion of females is expected to

show the most growth in the future.

a. prereproductive; short; high b. reproductive; short; low c. reproductive; long; low d. postreproductive; long; low e. prereproductive; short; low

Biology & Microbiology

The most efficient lungs with respect to oxygen uptake are found in this group of vertebrates. 

A. amphibians B. birds C. fish D. mammals E. reptiles

Biology & Microbiology

Which of the following virus structures contain the receptor sites that allow it to attach to specific sites on a cell?

a) capsule b) cell wall c) plasma membrane d) envelope e) nucleic acid core

Biology & Microbiology

Cytotoxic T cells have the ability to

A. produce platelets. B. increase erythrocyte production. C. produce antibodies. D. stimulate thrombin. E. destroy pathogens.

Biology & Microbiology