About what percentage of organic matter is composed of humus?
40%
50%
70%
90%

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

this is math not biology xd

six grader is what i am ssorry

the answer is a) cell division.

hope this !