The crossed extension reflex is the contraction of the extensors on one side of the body when the flexors are contracted on the other side.

Which of the following is an example of an environmental change the affected the evolution of life a. volcanic activity b. changes in climate c. mountain building d. all of the above

Consider the following planned experiment. factor experimental group control group light exposure tots of sun tots of sun amount of water weekly weekly type of soil nutrient rich nutrient rich size of pot large which variable is being tested in this experiment? small a. size of pot b. type of soil c. light exposure d. amount of water

How does the color of light affect the germination time (amount time a plant takes to develop) of a radish seed?