When you look at the sun through a filtered telescope, the visible portion of the sun appears blotchy. these blotches are called . the layer of the sun where these occur is called the .

Which best explains why viruses do not have special structures or enzymes that allow them to make their own food? viruses can use energy in living cells that they infect. viruses can replicate inside a host that they infect. viruses can cause contagious illnesses in host cells. viruses integrate their rna or dna into infected cells.

The big bang theory suggest that the universe is about - 300 million years old - 4.6 billion years old - 30 billion years old - 13 billion years old

Why do you suppose the structural polysaccharide cellulose does not contain branches?