Species richness describes the abundance of species in a community. the number of different species in a community. the number of species in a population. the landscape of a region. all the biotic and abiotic factors in an ecosystem.

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

Below, the levels of organization in a multicellular organism are shown from least to most complex. which level of organization can be described as several different types of tissues working together to perform a common task?

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.