Step 3: Evaluate the experimental design identifying sources of error. a) Evaluate the experimental design for adequate controls and measurement techniques in Question 1 in the
Written Analysis section below. b) Comment on possible sources of error in Question 2 of the
Written Analysis section below. c) Suggest improvements in the experimental design in
Question 3 of the Written Analysis section below.

The model illustrates a process by which a substance is taken up by a cell

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

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?