Answer - Cyanobacteria aka Algae that contributed in creating O2 for the atmosphere as a byproduct thru Photosynthetic.
Reason - Of course Algae make up mainly the whole world in waters and they do photosynthesis to give off oxygen in the atmosphere.
Answer:
https://hobart.k12.in.us/jkousen/Biology/mendel.htm
Explanation:
This site will tell you what you need to know.
The same copies of the dna with the genes is distributed in all the cells of the body. This makes all the cells of the body to have the same genetic material. In lower organisms, dna replication is necessary for reproduction in order to have the same genes in the progeny.
Answer: The father donates the Y chromosomes, and the mother donates the X Chromosomes
Explanation:
