Which is the main reason soil in agricultural ecosystems loses its nutrient content over time? a. Crop plants containing soil nutrients are removed from the system each year b. Desertification from overuse causes the rapid loss of nutrients c. Nutrients blow away whenever wind erosion rates are high d. Irrigation leaches nutrients out of the soil

2. in dragons, a gene on chromosome 1 codes for wing color and a gene on chromosome 2 codes for body color. draw out the stages of meiosis for these two chromosomes from a dragon that is heterozygous for both traits. define your alleles. what are all the possible allele combinations of the gametes produced?

This is one form of rna that transports a specific amino acid to a ribosome during protein synthesis.

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point