Answer: A
Explanation: There is no need to conduct and experiment if you already know the answer
Aquatic ecosystems can be classified as freshwater and marine ecosystems.
B pimples can last more than 2 days
Answer:
(i)
x= nucleus
y= chloroplasts
z= vacuole
(ii)
1) an animal cell does not contain a vacuole but a plant cell does
2) a plant cell contains chloroplasts but an animal cell does not