The first answer is A and the second answer is B
Box 3.
By the way I wondered what was the mantel made of and I wanted to share with you (to be informed).
Source: National Geographic
Hope it helps!
#MissionExam001
Answer:
DNA or RNA
Explanation:
There are a number of similarities between viruses and cells. Both are too small to be seen with naked eyes and require a microscope for observation. Both contain genetic material, in the form of DNA and/or RNA. Both of them can replicate, that is, produce more organisms similar to themselves.
Answer:
The source of pollution that decreases the oxygen level of water are plant fertilizer and animal manure.
Explanation:
Plant fertilizer that is applied in the agricultural field when enter into the water body, causes water pollution which increases minerals into the water body and animal manure contain raw material which causes eutropication that means increase algal bloom. This indirectly decreases oxygen availability into the water body.
