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The smokey mountains have over 2,100 miles of rushing mountain streams and rivers that flow through the park. in each mile lives a diverse community of native fish, amphibians, insects, and larvae, some of which are found only in the southern appalachians. park managers and scientific researchers test many factors such as fish populations, the watersheds and water tests to determine a) too many lizards are present b) the water quality of the stream c) rainwater is running into local streams d) if visitors to the park are overstaying their welcome

Astudent proposes this hypothesis in class: "if i make the angle of a ramp steeper, then a ball rolling down the ramp will be going faster when it hits the ground.” which part of a hypothesis should the student add to this that could also be tested in other experiments? an explanation based on prior scientific knowledge or observations an explanation of how the hypothesis will inspire new questions an independent variable that the student controls during the experiment an independent variable that is affected by the other experimental variable

Which of the following statements is a correct description of the flow of water through the engine shown in figure a-12? a. water flows through the radiator hose to the water pump. the pump circulates the water through jacket passages around the cylinders, and then to the radiator. b. water flows from the fuel tank through the intake manifold to the water pump. the pump circulates the water through jacket passages around the cylinders, and then to the radiator. c. water flows from the reserve tank through the radiator hose to the water pump. the pump circulates the water around the radiator, and the water then returns to the reserve tank. d. water flows through the radiator hose to the water pump. the pump circulates the water through the thermostat, through the exhaust pipe, and then back to the radiator.