Alex is examining a mollusk. it has filter-like structures for feeding, and it moves using a muscular foot. which mollusk is alex most likely examining? a clam, which is a bivalve a clam, which is a cephalopod a nautilus, which is a cephalopod a nautilus, which is a bivalve

1.fossils 2.analogous organs 3.homologous organs

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.

Lacking something of the ozone layer