Studying the solar system helps scientists learn about the universe. Why might a scientist use a model to represent the solar system?
A. The actual solar system is too simple.
B. The actual solar system moves too slowly.
C. The actual solar system is too small.
Ο Ο
D. The actual solar system is too large.

explanation:

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

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.

it should be d) transitional fossils.

they show the gradualism of evolution throughout a period of time