What needs to be present for petroleum to form? (select all that apply) * A. Heat
B. Pressure
C. Oxygen
D. Time

Identify the structure in organisms that do not have kidneys that is adapted to regulate water balance

What is the one part of the nucleotide  that differs among the other different nucle  tides?

In a village where the proportion of individuals who are susceptible to malaria is .70 and population is at hardy-weinberg equilibrium what population is heterozygous hba/hbs