Natural resources are classified as renewable and nonrenewable. what is the difference between the two? whether or not the resource exists in nature whether or not the resource can be replaced whether or not the resource dwindles in supply whether or not the resource is useful to humans

whether or not the resource can be replaced

Nonrenewable energy resources are those resources which are available in limited supplies. This is usually due to the long time it takes for them to be replenished in nature.  The examples are coal, nuclear, oil, and natural gas. Whereas on the other hand Renewable resources are replenished naturally and over relatively short periods of time like energy from sun and winds.

whether or not the resource can be replaced

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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