The variety of life across the biosphere is called what?

Anita thinks that she has heterozygous alleles for red hair. if she is correct, which of these diagrams best illustrates anitas alleles pf red hair

At which location in earth’s interior does the top density continue to increase as thickness decreases?

Mattias scheiden and theodor schwann studied plant and aniaml cells under a microscope. together these men concluded that plants and aniamals are made up of cells, which scientist furthered their study to complete our mordern cell theory