The nervous system plays an important role in body functioning. the receptors (skin ) transmit the messages from the sensory neurons to the spinal cord.. fro the required action is carried out through messages to the effector which goes through the mototr neurons
Number 12: if people planted a lot more tress then the level of carbon dioxide would decrease because trees take in co2 and produce oxyen.
Answer:
i think it is A but lmk if it is wrong
Explanation: