Vary the mass of the skateboarder uding the slider. using several different values for mass, drag the skateboarder to the top of the ramp. How does her mass affect the amount of potential energy she gains when she reaches the top of the ramp.

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

What does natural resource management aim at ?

20. in humans, freckles are dominant to no freckles. trey has no freckles and his wife anna grace has freckles, but her dad doesn't. they want to know what percentage of their kids would look like trey. show a punnett square to support your answer.