Both birds and mammals have four-chambered hearts. But birds are more closely related to reptiles, which have three-chambered hearts, than they are to mammals. The correct interpretation of these observations is that:

What is the correct trna sequence that would match the following mrna sequence.gcgaua

How are gross production and net production different? a. net production is always greater than gross production. b. net production is always less than gross production. only animals have net production. d. only plants have net production. select the best answer from the choices provided

Which of the following describes the difference in stimuli required to detect a difference between the stimuli? a. just noticeableb. signal detectionc. subliminald. top down