17. Red blood cells are important because they.. 1 repair damaged blood vessels
2 contain hemoglobin
3 protect the body from disease
4 produce blood clots

amber has allowed scientists to study dna that has been preserved over millions of years.

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

the dna of humans and mice is almost 92% similar. this similarity indicates that . mice have a tail, while humans have a tailbone. the tailbone is a structure in humans.yes it's true.