What is the order of the moon, earth, and sun in a lunar eclipse and a solar eclipse?

Dry ice is solid carbon dioxide that is used in the transport of food and medicine. dry ice becomes a gas at –78.5°c without becoming a liquid first.

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight