About 20 astronaut have faced fatalities during the space program.
Answer:
Convection currents are what cause the warmer molten material to rise up, and when it cools, to sink back down.
Explanation:
The two groups that are prioritized are children aged from six months to four year and senior citizens aged 50 and up.<span />
Answer:
Is a form of cnidarian in which the body is shaped like an umbrella
Explanation:
The other main body-form is the polyp. Medusae vary from bell-shaped to the shape of a thin risk, scarcely convex above and only slightly concave below
