PLZ HELP In which of the following examples is potential energy changing into kinetic energy?
A.
A bicyclist coasts down a hill.
B.
A bicyclist puts on the brakes.
C.
A ball stops rolling.
D.
A ball rolls uphill.

Which of the following is an effect of the uneven heating of the earth by the sun? a sea breeze a land breeze a convection current all of the above

Is a measure of the different types of organisms in a community. question options: tertiary secondary primary none of the above

Which of the following statements is accurate about evolution? question 10 options: natural selection only eliminates odd individuals. evolution means that a population never has changes in its genetic frequencies. mutations are always harmful. evolution means that a population undergoes changes in its gene frequencies over time.