Fertilizers added by farmers to the soil contained high amounts of nitrates. How do fertilizers affect the nitrogen cycle.

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm

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