During the Devonian Period, when Tiktaalik lived, the only land animals were invertebrates, such as worms and insects. Which macroevolutionary pattern do you think occurred once animals were able to survive outside of the water? Explain your answer.

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.

Which is the function of the hypothalamus in thermoregulation? answers: -sensor -effector -stimulus -intergrating center it's either a or c i believe

What is the difference between a scientific hypotheses and a scientific theory?