< 1 > PLAY
STOR
of science to answer the
10
The students want to see how changes to the design of the marble track will
affect the energy of the marbles.
(a)
As you respond to Part A, Part B, and Part C, follow the directions below.
estigate how the potential
he marbles move through
e different materials the
• Address all the instructions in each prompt.
• Use evidence from the information provided and your own knowledge of
science to support your responses.
Part A
One student wants to increase the potential energy of the marble at the starting
position. Explain one way the students can adjust the track to increase the
marble's potential energy. In your explanation,
• describe the dimensions of any materials used to adjust the track and
• explain why the adjustment to the track would increase the marble's
potential 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

Name one similarity and one difference between the morphology of a brachiopod and a bivalve

As the human population grows, what happens to our natural-resource requirements? o they increase o they decrease o they do not change. they go in cycles