Your cat rubs against your leg, tickling your skin, so you reach down and scratch your leg. which shows the correct order of signal production in the nervous system? (2 points)
sensory somatic system; central nervous system; motor neuron
central nervous system; motor neuron; sensory somatic system
sensory neuron; central nervous system; autonomic nervous system
central nervous system; sensory neuron; autonomic somatic system

The correct answer would be "Sensory somatic system; central nervous system; motor neuron".

Environmental stimuli (such as tickling of skin) are detected or received by the sensory somatic system (sensory neurons).  

The signals are then transported to the central nervous system (brain and spinal cord) for processing.

The central nervous system then sends signals to the effector organ through motor neurons.

It results in the production of effects on or through effector organ (such as scratching the leg).

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.

i don't have a definite answer, but i would assume not based on my experiences with my friend when we both were taking a spanish course; however, it would probably still be to your benefit to look at what questions she received, just in case. a language course and a science course differ greatly, after all.