1. is A
2. is D
hope i help
Answer:
The sides of the ladder are made of alternating sugar and phosphate molecules. The sugar is deoxyribose. The rungs of the ladder are pairs of 4 types of nitrogen bases. Two of the bases are purines- adenine and guanine.
Explanation:
can you mark me brainliest
Answer:
C-The total mass off all the organisms in a representative area of the ecosystem.
I believe the answer is C
I read something in my textbook about all living organisms have history of the same genetic info =D