Answer:
Reflex arcs
Sensory neuron sends electrical impulses to a relay neuron, which is located in the spinal cord of the CNS. Relay neurons connect sensory neurons to motor neurons. Motor neuron sends electrical impulses to an effector. Effector produces a response (muscle contracts to move hand away).
Because the earth's rotation isn't a perfect circle, so it gets different amounts of sun in certain times
The answer would be “A cancer cell” i believe.
