The cells of living organisms store genetic information in the form of DNA, which can be transcribed into RNA. RNA can then be translated to form protein products. The genetic code that determines the sequence of DNA nucleotides that results in specific protein products is the same for all organisms on Earth. Which of the following does this provide evidence for?
A.
All species have identical phenotypes.
B.
All species have the same number of chromosomes.
C.
All species have existed for the same amount of time.
D.
All species share a common ancestor.

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

Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.

What maintain homeostasis when a persons internal body temperature is 97.5°f