Although the flashlight shines with the same intensity in both cases, less energy is absorbed by photovoltaic cell 2. which feature related to seasons is modeled by this investigation? a. the tilt of earth as it spins on its axis a. the tilt of earth as it spins on its axis b. the rotation of the moon around earth b. the rotation of the moon around earth c. the rise and fall of the sun as it orbits earth c. the rise and fall of the sun as it orbits earth d. the elliptical path of earth as it orbits the sun d. the elliptical path of earth as it orbits the sun

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

answerblank(1) epidermis; blank(2); dermis;