What are some of the abiotic factors that scientists monitor when dealing with stream ecosystems? what are some of the biotic factors that scientists monitor when dealing with stream ecosystems? what is a "benchmark" in ecology? why are they essential? how does water pollution seem to be affecting diversity in some streams?

Plz ! cattle ranchers and dairy farmers rarely allow all of their animals to reproduce instead they practice selective breeding and only encourage the reproduction of animals with specific features. which of the following cows would a dairy farm most likely choose to reproduce? a. a cow that makes a lot of milk. b. a cow that can run quickly. c. a cow with a think, soft fur. d. a cow with large, strong hooves.

Apuppy’s tendency to chew is inherited through which of the following? a. through learned behavior b.through genes c. through seasonal cycles d. through hibernation

All ova contain sex chromosomes corresponding to: x y xx xy