1 What are the four types of living things found in an ecosystem?

producers, consumers, second consumers, tertiary consumers

producers, scavengers, consumers, decomposers

producers, scavengerrs, primary consumers, tertiary consumers

producers, primary, secondary, tertiary

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.