Which of the following best identifies a physical digestive process?
enzyme action

heat formation

peristalsis

acid secretion

Apopulation of black bears depends on salmon from a stream for food. if a drought causes the stream to run dry one year, how will this likely impact the black bear population?

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from

We all have different forms of genes from our parent(s).what are these different forms called? a. alleles b. characters c. dna d. resources