A 10-year-old kid is made up of how many atoms?

Which of the following graphs have the same wavelengths

Land conservation is a worldwide priority. there are several methods to prevent the loss of land due to a variety of reasons. which method is not a way to conserve land? a) sea walls b) rainwater harvesting c) limits on clear cuts of forests d) cut and burn methods of clearing land

What is the difference between a meteoroid and a meteor?