Which is true about the law of conservation of mass? a) when a new substance is formed, matter is added. b) atoms are destroyed during a chemical reaction. c) during a chemical reaction, atoms are created. d) atoms cannot be created or destroyed, only rearranged.

Indicate whether the following statements about the biases in the fossil record are true or false. a) inland species are more likely to be preserved than marine species b) organisms with hard body parts are more likely to be preserved than are those composed soft tissues. c) species that existed over a larger area are more likely to be preserved than species existing over a smaller area. d) organisms that lived very long ago are more likely to be found as fossils than organisms that lived relatively recently e) the fossils of larger organisms are more likely to be found than the fossils of smaller organisms

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere

What best describes the dropping height of a ball that bounces back up to a height of 45 cm