Tubular reabsorption is the process that moves back into the bloodstream the solutes and water out of filtrate. It is so called because this is the second time they have been absorbed in which the first time was when they were absorbed and transported from the digestive tract into the bloodstream. The substances travels from the filtrate of the proximal convoluted tubule and next to the LOOP OF HENLE.
A biologist whose interest lies primarily in the study of plants or animals can be called a naturalist, although these days it's more likely she'll be called a natural historian, a botanist, or a zoologist.
Thymine and cytosine are classified as "Pyrimidines" and have one ring of carbon and nitrogen atoms for each base.
I would say keep the soil from eroding and doesn't let it get dried out so fast.
