I'm at a loss between A & C but I'm not sure, I'd go with A
The correct answer is bacteria. Bacteria abundant in soil is the main source of its organic matter. This is because bacteria release energy in their systems which causes the soil to be more fertile and more capable of sustaining plant material. Without bacteria general processes of soil formation will not be possible.
Its internal mainly because none of the other words fit and because what happens with the rumbling and vomitting its INTERNAL
hope this helped plz mark brainliest if u can
Answer:
All cells contain genetic information in the form of DNA molecules. ... Empirical evidence is required to differentiate between cause and correlation and to make claims about the role of DNA and chromosomes in coding the instructions for the characteristic traits passed from parents to offspring.
Explanation:
