1 A scientist wants to measure the size of a cactus population in a desert valley. What method should she use? A. mark-recapture sampling
B. quadrat sampling
C. computer modeling
D. radio telemetry​

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