Rhys was asked by his teacher to set up a light microscope so that he could view some cells at a magnification of x100. The microscope had three objective lenses of x4, x10 and x40 magnifications. Rhys was also given a prepared slide of muscle cells. how can he view the muscle cells at a magnification of x100?

According to the theory of punctuated equilibrium, at what rate does speciation occur? species change depending on the rate of natural selection. after periods of stasis, new species evolve relatively rapidly. species change slowly and eventually form new species. some species change quickly and others change slowly to balance the overall rate.

How do adaptation affect a species?

Which sequence correctly shows the path of carbon dioxide during repiration?