An external event stimulates a sensory nerve, which transmits a signal to an interneuron in the spinal cord. This stimulates a motor neuron, which stimulates a muscle to contract. Which of the following terms applies to the sequence of events described above? A. voluntary motion
B. reflex
C. somatic response
D. synapse

d.

explanation:

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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answer: zinc is the substance which has a volume of 1.38 .

density is defined as the mass of an object per unit volume.

it can be calculated by dividing mass of a substance by its volume i.e.

si unit of density is kg per cubic meter and cgs unit of the same is gram per cubic centimeter.

now from the given data volume can be calculated by the formula .

hence, the volume of aluminium will be = which comes out to be 1.703 .

similarly, volume of zinc, chromium, and nickel will be 1.378 , 0.869 , and 0.356 respectively.