Both pocket mice and peppered moths are exposed to selection pressure caused by ________
a. industrial pollution
b. predators
c. temperature changes in their habitats
d. vegetative disruptions caused by introduced plant species
b
You might also like to view...
The higher the phenol coefficient value, the ________ effective the disinfectant under the test conditions.
Fill in the blank(s) with the appropriate word(s).
Why do neurons generate an action potential, instead of simply relying on the opening of ion channels near the stimulus site to transmit information?
A. Because without the actions potential, changes in Vm at the stimulus site might not reach the axon terminal B. Because without the sectional potential, the neuron would not depolarise C. Because action potentials help the body keep ion concentrations at appropriate levels D. Because without the action potential, the neuron would not return to resting potential
The evolution of new species
A. always takes millions of years. B. can take place in one generation. C. is a rare event over hundreds of millions of years. D. is not occurring today.
Mycobacteria secrete a waxy coating that makes this disease difficult to treat using antibiotics:
A. Whooping cough B. Cholera C. Lyme disease D. Impetigo E. Tuberculosis