Explain: In wild populations, evolution is often caused by natural selection. Based on what you have observed, how does natural selection occur?

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

What part of the cell does 9 represent? a. cytoplasm b. lysosome c. ribosome d. centrosome

The human body needs energy in order to carry out life processes such as breathing. where does the body get this energy? a. from eating food b. from learning about new things c. from lying in the sun d. from sleeping