Which of the following would be entirely of nonrenewable sources ? a. a gold necklace b. a textbook c. vegetable oil d. cotton sheets

Renewable sources of energies are those who can grow again, such as trees and plants, or that can always reappear, such as wind and solar energy. Nonrenewable energy, however, cannot be regenerated, like oil and coal, or are mined minerals.

The answer here would be A, as a gold necklace is made of a mined substance, which is nonrenewable.

The correct answer would be they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur all year long.