Genes . are carried on chromosomes
are made of DNA
can cause genetic disorders
determine physical and chemical traits
are made of chromosomes

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

When energy is used, atp molecules convert to adp molecules. this process is called

12) several teeth were found in an area of flat land covered with trees and plants. the teeth were examined by a paleontologist, and it was determined that the teeth came from a shark. they found many other shark teeth in this area. however, the people who discovered the teeth were puzzled, because there was no source of water near where the fossils were found. what is the paleontologist's best explanation for why the teeth were found in this area? a) sharks used to live on flat land. b) this area was once covered with salt water. c) this area was once covered with freshwater. d) someone buried the shark teeth deep in the ground.