In the fist box is Oxygen builds up....
In the second is The Last ice age
And the last is the last answer.
Sorry for not typing the whole answer!
Hope i helped you :)
Commensalism :)
in case when bacteria and human, both are benifited.
Answer:
crossing over
Explanation:
Crossing over is where homologs can exchange DNA which leads to genetic variation
Prostist are eukaryotic, unicellular, and heterotrophic
Answer: B
Explanation:
the less trees the more carbon
