Answer:
the dna for all organisms is commen because almost every living thing had dna from both there mother and father
Explanation:
I think you spelled the question wrong
Answer:
Im pretty sure its A if I read that right.
Explanation:
hope this helps
You can carry out a test ,
1- take a sample of the air in a test tube
2-add limewater to the test tube
3- result : if it turns milky/cloudy it has microorganisms
4- reason: because every microorganism respires , and so it produces Carbon dioxide .
and limewater is the test to show the presence of Carbon dioxide .