In an experimental design, the variable the researcher has control over and that is different for the treatment and control groups is called the a. random variable b. response variable c. dependent variable d. lurking variable e. explanatory variable

Dr. kaylan is an ecologist who studies bird behavior. she sets up an experiment to test which type of food crows are most likely to eat when given a choice between walnuts, corn, and sunflower seeds. to perform her experiment, dr. kaylan places three food bins in an area frequented by cows. each bin contains one of the three food types. then, she measures how much of each food type is eaten every day for a month and summarizes the results of her experiment in the pie chart below. based on her results, dr. kaylan concludes that crows choose to eat corn more frequently than other food sources because it has a higher nutritional value. what is a reasonable alternate conclusion that can be drawn from dr. kaylan's data

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?