L 1.4.2 Test (CST): What Is Earth Science? Question 3 of 15 When a ball rolls down a hill, what energy conversion occurs? A. Chemical energy to kinetic energy
B. Potential energy to kinetic energy
C. Kinetic energy to potential energy
D. Potential energy to chemical energy

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

Organelles found in plant cells that function through photosynthesis to produce glucose from carbon dioxide and water are called — question 21 options: chloroplasts guard cells photosynthons

Which state of matter has the following physical properties: ~ takes the shape of the container it is in ~ takes the volume of the container it is in ~ low density. answer is gas