Jayden has been asked to wear a protective vest while his dentist takes an x-ray. why is this? x-rays are dangerous mutagens. x-rays are considered poisonous. x-rays are harmful chemicals. x-rays are a result of uv radiation.

(! ) what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

How many major plates cover the earth

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