Which kingdom contains only producers? a) animalia b) fungi c) insecta d) plantae

Plantae is the kingdom that only contains producers. They produce food for themselves and others, rather than taking food. 

Neurotransmitters are messengers responsible for communication between neurons. they are released from synaptic vesicles and are received by receptors.  the communication is referred to as neurotransmission. the following statement is true about neurotransmitters: a. they're stored in synaptic vesicles in the axon.