Without wolves, the health of forests suffers. what theme of biology does this demonstrate?

1- unity within diversity

2- interdependence of life

3- continuity within change

4- function dictates form

There are four nitrogenous bases that make up dna. the two pyramidines are thymine and cytosine. the two purines are adenine and guanine. these bases pair in a very specific way. adenine - thymineguanine - cytosine i remember it like this: a tall, good cat.