Roof valleys came from from from threes in earths crust white in the valleys were slowly move at a rate of only a few millimeters a year which of these best describes the best type of tectonic activity that forms rift valleys

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.

Its actually d. it can make farmworkers sick