Sports can be more fun in reduce gravity. what jobs could be harder or less fun to do in space? why?

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.

What structural formula represents 4 electrons shared between two atoms?