the graph shows the changing levels of hormones during menstruation and ovulation. which hormone has the most influence on a safe pregnancy?

a)a graph shows the changing levels of hormones during menstruation and ovulation. progesterone increases after ovulation.

b)luteinizing hormone promotes fertility because it spikes the most during ovulation.

c)estradiol promotes fertility because it peaks slightly before ovulation.
progesterone promotes fertility because its levels rise during ovulation and immediately after.

d)follicle-stimulating hormone promotes fertility because it is released mostly during ovulation.

Read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. applying the biological species concept, the sterility of ligers reveals that a. lions are probably a subspecies of tigers b. tigers and lions are the same species c. a new species called "ligers" is forming d. tigers and lions are separate species

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

Which statements describe resources? one of the factors people use when deciding where they will live is the availability of resources. renewable resources have little value for people. resources are unevenly distributed throughout the world. energy is the world resource which has the highest use. the use of nonrenewable resources has decreased in recent history. the use of resources is evenly distributed throughout the world. the world's oil supply will last for the next forty years if its use continues as expected.