to answer the following questions 1. How many tons of coal, oil, and gas are estimated to exist in the earth? a. 2200 b. 4 million c. 3300 billion d. 270 million ​

Amap's orientation is typically determined by an

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

Which tool could you see a plant cell? a. a filter b. a microscope c. a microwave d. an electromagnet