When parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus. The distance between the principal focus and the centre of the lens is called the focal length.
Food web provides a better model of an ecosystem and model of many different consumers
Answer:
the cell would lack genetic material
The R-group (side chain) is what makes each amino acid unique. Each of the 20 amino acids has a different side chain structure.
None bc the mother of the child said no to the medicine bc of the possible side effects. I dare you actually put that as the answer, look at the angry look on your science teacher’s face
