Q: when no exernal forces are acting on a group of objects, their total momentum does not change

answer choices:
a) law of conservation of energy
b) law of conservation of matter
c) law of conservation of mass
d) law of conservation of moment

What is the main difference between the central nervous system (cns) and the peripheral nervous system (pns)? .the cns involves the brain and spinal cord, and the pns involves the body nerves. the cns involves the body nerves, and the pns involves the brain and spinal cord. the cns involves sensory neurons, and the pns involves motor neurons. the cns involves motor neurons, and the pns involves sensory neurons.

Jason puts an apple on top of an ice pack in his lunch bag lunch time the temperature of the apple has decreased what happens to the molecules in the apple when the temperature of the apple decreases

Why should organisms reproduce more offspring than will survive? select all that apply.