Why are there more younger stars than older stars in the galaxy 4-5 sentences answer

Which of the following is a good definition for the word adaptation? question 1 options: a trait that an organism survive and reproduce in its environment. a change in an organism's environment. the way in which animals obtain food. a temperature change that can cause the extinction of plants and animals.

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees

Which of these is not an obstical to the future of space exploration? fundingresearch ideas technologytime