Answer:
How can I reduce my exposure to radiation from X-rays?
- Tell the X-ray technologist in advance if you are, or might be, pregnant.
- Ask if a protective shield can be used. ...
- Ask your dentist if he/she uses the faster (E or F) speed film for X-rays. ...
- Know your X-ray history.
Answer: North America
Explanation: About 80 million years ago, North America and Europe, Australia and Antarctica, and India and Madagascar followed suit and separated. Over millions more years, the continents moved to their approximate current positions.
Hippos likely evolved from a group of anthracotheres about 15 million years ago, the first whales evolved over 50 million years ago, and the ancestor of both these groups was terrestrial. These first whales, such as Pakicetus, were typical land animals. They had long skulls and large carnivorous teeth. Hope I’ve helped ;)
