Which ensure a groups access to resources it needs for survival?

a. courtship ritual
b. hibernation
c. conditioning
d. territorial behavior

Based on the equation and the information in the table, what is the enthalpy of the reaction?

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

Fossil fuels are organic compounds that are made from