Skateboarder is flying through the air after a jump.
Which would BEST describe
the type of energy used by
the skateboarder while
jumping?
A. Electromagnetic energy
B. Mechanical energy
C. Nuclear energy

Which flexible structure that supports the nerve cord and led to the backbone

During a hot day, warm and moist air rises and cools in the atmosphere. which even would occur next on such a day? a. condensed droplets would gather to become water vapor. b. water vapor would condense into tiny droplets. c. water droplets would evaporate to form rain and snow.

What does the hardy-weinberg principle relate to? a. chances of survival of an organism b. frequency of alleles in a population c. natural selection in a species d. causes of evolution among organisms