The type of contraception that works because ovulation is prevented is:
a. rhythm method
b. tubal ligation
c. oral contraceptive pills
d. the diaphragm
e. the condom
c
You might also like to view...
Selection pressures acting on a population may
favor a. individuals at the left end of the range of variation. b. individuals at the right end of the range. c. extreme individuals at both ends of the range. d. the intermediate individuals within the range. e. all of these.
Which process can create new alleles?
A. natural selection B. mutation C. sexual reproduction D. genetic drift
Which of the following tree stands would you predict has the highest NPP?
A) 0-1 years old B) 1-10 years old C) 30-60 years old D) over 100 years old
Several ecology students were tracking the population ranges of two species of squirrels that live in the Cascade Range of Oregon
These students noted that when both species of squirrels were present in a region, species A could be found from sea level to about 900 feet above sea level, and species B could be found from about 900 feet to 1,500 feet above sea level. However, when species B was found alone, it had a range of about 500 feet to 1,500 feet above sea level. This is an example of A) predator avoidance. B) coevolution. C) habitat fragmentation. D) competitive exclusion. E) parasitism.