Answer : Option A) He is studying oxygen, which can also be found in proteins.
Explanation : A scientist is examining the role of an element found in fats and carbohydrates of living things. Oxygen is the element which makes up to 65% of human body mass. This is also found in proteins inside the body.
They're able to adapt easily and reproduce quickly
Well new species can come and live there and some animals may have new food but the disadvantage is some of the animals ill die that lived there because of the changes...i hope this helped you
Answer:
1) Amoeboid protozoans or sarcodines. They are unicellular, jelly-like protozoa found in fresh or sea water and in moist soil. ...
(2) Flagellated protozoans or zooflagellates. ...
(3) Ciliated protozoans or ciliates. ...
(4) Sporozoans.
Explanation: