what is an allele A. an organism that lives in eukaryotes b. a group of chromosomes c. a chromosome that determines gender d. a gene that causes specific trait

Liquid water turns into water vapor at which step in the water cycle? a. precipitation o b. water run off c. evaporation d. condensation

List the advantages and disadavantages of the switch from persistent chlorinated hydrocarbon pesticides (such as ddt) to nonpersistent organophosphate pesicides. have the benefits of the switch outweighed the disadvantages? explain.

Why is it important to study each branch of earth science?