what is the measurement of a population per unit area?
the (population structure, population density, or population size) is the measurement of a population per unit area. overcrowding is an example of (density-independent factor, positive population growth, or density-dependent factor) .

The modern-day generator works on the principle of electromagnetic induction discovered by michael faraday in 1831-32. faraday discovered that the above flow of electric charges could be induced by moving an electrical conductor, such as a wire that contains electric charges, in a magnetic field.

Tons?

Answer(b) both involve the use of levers;