Describe structure of chemical synapse

one neuron release neurotransmitter molecules into small space ( the synaptic clef ) that is adjacent to another neutron. The neuron transmitters are contained within small sacs called synaptic vesicles, and released into the synaptic clef by exocytosis

Explanation:

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.

that is wrong, its not thymus.