Cytosine pairs with Guanine
Adenine and Thymine are pairs also
Hope this helps :)
Answer: B
Explanation: the sun is made of gas, which doesn't all spin together at the same speed like a solid rock would.
Answer:
carrying capacity (carrying capacity is the total population size that a particular environment can comfortably support with little increase or decrease over a relatively long period of time) given the food, habitat, water e.t.c. that is available in the environment.
Yes they do without it they could not produce protein.
