Which of the following provides the best comparison between fish and birds?

they are both ectothermic, but fish have streamlined bodies and birds are bipedal.

they are both vertebrates, but fish are ectothermic and birds are endothermic.

they both lay eggs, but fish are jawless and birds have gizzards.

they both have two-chambered hearts, but fish have scales and birds have feathers

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

Amoeba sisters video recap pedigrees

Anton created a chart listing different types of materials. which best complete the chart?