Students in a science class were asked to develop a model to show how global winds form on Earth. Many students drew the same model above but did not correctly explain how global winds form. Which student has developed the correct explanation for the model to show how global winds form on Earth? A.
Student 1: High pressure replaces low pressure causing global wind to form and the spin of the Earth causes these winds to curve.

B.
Student 3: High pressure and low pressure become equal causing global wind to form and the spin of the Earth causes these winds to curve.

C.
Student 2: Low pressure replaces high pressure causing global wind to form and the spin of the Earth causes these winds to curve.

D.
Student 4: High pressure and low pressure mix together causing global wind to form and the spin of the Earth causes these winds to curve.

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. chytridiomycosis is a fungal disease first identified in 1998 as a cause of massive amphibian deaths. in some severely impacted populations, a few individuals have survived, perhaps because of some natural resistance. if these resistant individuals continue to survive and prosper, new resistant populations might emerge. this would be an example of the founder effect artificial selection genetic drift natural selection sexual selection

Which organelle plays a role in intracellular digestion?

Aquantity of gas has a volume of 18 m3 and an absolute temperature of 225 k. when the temperature of the gas is raised to 380 k, what is the new volume of the gas? (assume that there’s no change in pressure.)