According to the current definition of a species, which of the following is an example of a species?
select one:
a. two rehesus monkeys with slightly different physical features mate to produce fertile offspring.
b. in a population of frogs, one type of frog mates in early april while the other mates in late june
c. a coyote and wolf housed together in a zoo pen
d. a donkey and a horse mate to produce a mule that is sterile and is unable to produce babies

Ecosystems involve living organisms interacting with non-living things in a productive way; how is photosynthesis an example of this? answer, i will give brainiest to first person to get it right.

What did hunter gathers do to alter the environment?

Diego conducted an experiment to find out what kind of ball bounces the highest when dropped from a five-foot platform. he used a golf ball, a tennis ball, and a soccer ball. he dropped each ball from the balcony once. diego recorded his observations after each drop. what can diego do to best improve the reliability of his results? a) drop each ball from the platform three more times b) record his observations in more than one unit c) write at least two scientific questions after the experiment is complete d) share his results with other people who have done similar experiments you for the !