Why is breathing more difficult at high altitudes, such as at the top of mount everest?

The mammal pictured below is a silvery mole rat. which statement is an inference based on the picture? the animal is ugly. the animal has hairless feet with sharp claws. the animal has prominent upper and lower incisor teeth. the animal likely has poor vision since its eyes are so small.

What do we call the process when two dominant alleles are expressed and do not blend? a.incomplete dominance b.codominance c.multiple alleles

Aincludes all the ways an organism lives and interacts with its environment. a. population b. habitat c. ecosystem d. niche