Which microscope is able to magnify objects up to 200,000 times?

Are the earth's ocean floor and continents the same age geologically? why or why not?

Which feature would you expect to find in a population in which sexual selection depends on male competition?

Several bodily responses are described below. for each response, determine what caused the change in homeostasis. body starts to sweat breathing rate increases amount of saliva produced changes body starts to shiver