What process allows nitrogen to enter the atmosphere?

Which of the following lines of evidence would best support your assertion that a particular plant is an angiosperm? a) it produces seeds. b) it retains its fertilized egg within its archaegonium. c) it lacks gametangia. d) it undergoes alternation of generations.

How do the evolutionary chart and the video support the claim that all living things are made up of cells?

What is gene expression control that occurs after the generation of rna