Segments of dna transferred from parent to offspring are called .

Why was the sample heated in step 5? describe the chemical principles involved in the reasoning behind this step?

Is snow a type of precipitation? explain why or why not.

Use the drop-down menu to match the following definitions to the corresponding terms. the total variety of organisms that live in the biosphere a group of organisms that breed and produce offspring that can breed all of the biotic and abiotic factors in an area