Is a renewable resource that is constant and will never run out.
a) coal
b) nuclear
c) oil
d) solar

The correct answer would be D) solar.

Renewable energy or resources refer to the natural resources which get replenished as fast as they are being used.

They include solar energy, geothermal energy, tidal energy, biomass et cetera.

Non-renewable resources refer to those natural resources which don not get renewed or replenished as fast as they are being used.

For example, coal, petrol, diesel, natural gas, oil, et cetera.

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.