Male songbirds sing to attract females to mate
with. Different species of male songbirds sing
different songs that will attract only the
females of their species. This is an example of
___ isolation.
a. temporal
b. ecological
c. behavioral
d. mechanical
e. genetic
C
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A scientist could test how the traits of desert plants are adaptive by ____
a. transplanting individuals that have the trait into moister habitats b. selectively breeding individuals displaying that trait c. conducting straightforward experiments in the desert habitat d. crossing individuals in the desert with individuals in moister habitats e. comparing them to traits in related species from moister habitats
The carrying capacity of the Earth for humans is influenced by
A. food and energy supply. B. disposal of waste products. C. interaction with other organisms. D. All of these answers are true.
Choose the letter of the best match from the following:A. birth control pillB. intrauterine deviceC. diaphragmD. foams and jelliesE. vasectomySperm destruction.
Fill in the blank(s) with the appropriate word(s).
root -ology
What will be an ideal response?