Ashrew is adapted for burrowing and a monkey for tree dwelling. their forelimbs appear quite different from each other's, but the internal structure of the forelimbs of these two animals is same. what do you conclude from this example?

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

How are fungi more like an animal? they have a cell wall. they are heterotrophs that absorb their food. they produce seeds and have membrane-bound nucleus. they use sunlight for photosynthesis.

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.