Megan wants to see if mice that are fed food a or b grow at a faster rate, so she creates an experiment. she measures the mass of the mice on day 1, then divides them into two groups based on the type of food they will be given. she feeds each group the same amount of food at the same time each day. does megan have a control group in this experiment?

Match the types of competition to their descriptions.

There are six elements that make up most of the human body. which of the following is not one of these six elements?

Drag each label to the correct location on the image. g organisms adopt different strategies and structures to make sure their offspring it uses. herds young into center of group produces many offspring at once to protect against high predation risk protects offspring until environmental conditions are ideal for growth coo b 13 1994 7 odos si . an . i