Answer:
B. the nervous system
Explanation:
The nervous system is one of the body systems that has to do with the passing signal information to and fro the BRAIN and other sensory organs e.g eyes, nose, ears etc. The nervous system is what causes an individual organism to sense and respond to environmental stimuli by passing chemical signals to the brain and back to the site of effect.
According to this question, a frog is able to leap away from a snake because danger is sensed and responded to by the NERVOUS SYSTEM. Information in form of chemical signals (impulses) are passed across the brain of the animal of a possible threat, which then sends back information for the frog to react to such danger by leaping away.
The answer to this question is Sphere
A dodecahedron has angles and edges
A. The work increases.
Work=Force*Distance
in this case, the force is the weight since we are moving in an upward direction.
Weight=Mass*Acceleration Due to Gravity
Since Gabriella is carrying a greater mass upward (herself and the two heavy books), her force upward is greater in the second case. Thus, since the distance is the same, the work done by Gabriella is also greater.
Because they figured out that other animals don't drag their tails.