Immediately following the arrival of the stimulus at a skeletal muscle cell there is a short period called the
a) period during which the neurotransmitter is released by exocytosis,
b) diffuses across the synaptic cleft,
c) binds to its receptors.

The rapid decomposition of organic matter produces evidence which supports: the slow accumulation of coal deposits long ages of the earth rapid burial of vast amounts of vegetation biblical account of noah's flood

What are the two causes of density in deep current waters? a. salinity (how much salt) of the water and high temperaturesb. salinity (how much salt) of the water and low temperatures c. oxygen content of the water and high temperatures. d. oxygen content of the water and low temperatures

Which of the following is a testable hypotheses?