I need help on this question please help conduction , convection , radiation
which one of these

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Ascientist and her team counted 200 individual deer in an area of 10 square kilometers. what is the population density?

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

Glucose is a form of sugar found in the blood cells use glucose as a source of energy, but too much or too little can cause serious health issues so, the body uses the hormone insulin to regulate glucose n the blood insulin maintain glucose levels in the blood if blood glucose lovels got very high, what would you expect to see happen to insulin levels?