Explanation:
Amoeba is different from plant cell because the plant cell is eukaryotes whereas Amoeba is prokaryotes. so plant cell are more similar in size and are typically rectangular or cube shaped and An amoeba has no definite shape
A because if you are going down deeper into the ocean, you are going farther away from the sun so it will become colder.
Carrots i would like to beleive
Optical Microscopy. Hope this helps