Describe whether some trophic levels benefit from the disturbance while others do not. If the disturbance was caused by humans, was it negative or positive for each trophic level in the food chain?

Ibelieve its b but u might have to

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.