Which situation shows a renewable resource in use?

A. Gold is used to make a ring.

B. Pines re-seed after a fire.

C. Gasoline is burned in a car.

D. Pennies are made with copper.

Once an egg cell is fertilized by sperm, the cell then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's blood. a. becomes a fetus immediately and exits the womb b. begins to divide and implants itself in the wall of the uterus c. remains in the uterus without dividing for several months d. travels back to the ovaries until the fetus is developed

Why are some people more concerned about shark survival than about shark attacks?

Earthquakes a. created the rock in arches utah b. can be caused by volcanic eruptions c. are caused by tsunami waves d. wear mountains down into hills