Which organ is essential in circulating oxygen throughout the body?
a. liver
b. heart
c. lung
d. kidney

Need with these questions . need the answers in a rush for these questions are the answers i put down are correct or not? ?

Dna, in the nucleus carries the genetic code for making proteins in ribosomes. in the diagram, b, represents the proteins produced. dna cannot leave the nucleus to carry the genetic information to the ribosome where proteins are produced. how does the genetic code get from the nucleus to the ribosome? what does a represent? now

The wind is to parities grasses because it them