Answer:
b. neurotransmitters
Explanation:
Neurotransmitters are chemical substances released by axons that are the terminal parts of neurons, neurotransmitters are stored in membrane-bound synoptic vesicles at axon terminals. The neurotransmitter discharge happens when a nerve impulse reaches the end of the axons
Answer:
The greatest obstacle to developing solar energy is large areas required to collect sufficient energy. Solar energy is the energy that is the sun is producing and being converted into thermal energy that can be used for everyone's daily lives. :)
Explanation:
Answer:
The northern lights, one of several astronomical phenomena called polar lights (aurora polaris), are shafts or curtains of colored light visible on occasion in the night sky. Aurora borealis – the Northern Lights. The origin of the aurora begins on the surface of the sun when solar activity ejects a cloud of gas.