Muscle cells generally need more available energy because they constantly help the body to move. Which organelle would a muscle cell need a lot of in order to be able to do its job well and why?

A)Nucleus, because it needs to constantly provide information to the cell

B)Mitochondria, because it controls what goes in and out of the cell

C)Chloroplast because it uses energy from the sun to make sugar

DMitochondria, because it converts sugar into energy

Read the following scenario to answer the following question. over the past 60 years, many amphibian species have experienced significant population declines, and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. when most populations of a wide-ranging amphibian species are lost and the few remaining populations are widely separated, we expect to see that a. the founder effect becomes increasingly important b. microevolution no longer occurs c. gene flow between populations is reduced d. artificial selection becomes a greater factor in microevolution

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

Abiologist counts the number of rabbits in a population each year and observes a decrease in population. since the coyote population has exploded, the biologist concludes that the coyote population has had a negative interaction with the rabbit population. which describes the biologist’s actions? a.) experimentationb.) inferencec.) observationd.) interacting