Which of the following is an example of homeostasis?

a. the lungs of animals excrete carbon dioxide

b. the beak of some birds are hooked in shape

c. we feel cooler when we stand under the shade of a tree

d. we feel warmer when all the windows are shut on a cold night

Astudent reads the following text in a science book: scientific evidence tells us that the cause of earths four seasons is the tilt of earth as it revolves around the sound the student is instructed to illustrate this information in a science book. how will the student illustrate winter in the northern hemisphere? a.earths northern hemisphere will tilt away from the sun. b. earths northern hemisphere will tilt toward the sun. c.earths orbit will be farther away than from the sun d. earths southern hemisphere will tilt away from the sun.

How would you expect the mrna codons that code for the amino acids that make up hemoglobin to compare between humans

True or false 5. carrier proteins have the ability to to change shape and physicially move molecules across the cell membrane. 6. in a facilitated diffusion, the concentration of the molecules to be moved across the cell membrane is higher inside the the cell.