Structure 2 in figure four represents a A. mRNA
B. tRNA
C. rRNA
D. DNA molecule
Need help pleaseee

Which beat describes the brain stem

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?