Nitrogen gas is most commonly found in which of earth's spheres? a. biosphere b. exosphere c. atmosphere d. hydrosphere

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

The frequency of alleles in a population that is in hardy weinberg equilibrium? a . changes in each successive generation b. is less important than the frequency genotypes c. shows evidence of the process of natural selection d. remains the same over several generations

Select all that apply. careful listening skills include: refraining from interrupting the speaker taking quality notes making an effort to understand maintaining eye contact with the speaker