Which of the following statements is true? rainforest vines grow up trees to reach the upper canopy. this is an example of light competition. biologists believe that true parasitism in nature is very rare because not all hosts are harmed by the parasite. a tapeworm living in the small intestine of a human is an example of an ectoparasite. mutualism is the most important symbiotic relationships for evolution because both organisms must learn to work together.

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

Suppose a suitcase has a mass of (m) 30 kg and a net force (n) of 10 kg*m/s. what is the acceleration rate of the suitcasein m/s? show your work to support your answer

Why does it matter if osmosis is put into a “scab” or a “nosebleed? ” where would that leave him?