Answer:
d and b
Explanation:
I have done middle school science.
Contain 46 chromosomes each
Answer:
The answer is double helix.
Explanation:
In its natural state, each DNA molecule is actually composed of two single strands held together along their length with hydrogen bonds between the bases. Watson and Crick proposed that the DNA is made up of two strands that are twisted around each other to form a right-handed helix, called a double helix.
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Community, habitat is in general and ecosystem is the whole place, not just the soil.