There Is More Gold in 1 Km³ of the Ocean

question 72

Multiple Choice

There is more gold in 1 km³ of the ocean than the amount of gold mined in all of recorded history.How come we do not mine the oceans?

• A)It is too dilute to separate.
• B)It would take too much energy.
• C)It would cost too much.
• D)all of the above
• E)none of the above

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Definitions:

Temperature

A measure of the internal energy contained in a substance, indicative of its thermal state.

Gametes

Reproductive cells (sperm in males and eggs in females) that unite during fertilization to form a new organism.

Ovaries

Female reproductive organs in which eggs are produced along with the secretion of hormones like estrogen and progesterone.

Cervix

The lower, narrow end of the uterus, which opens into the vagina and dilates during childbirth to allow passage of the baby.