Which of the following is not a way in which carbon gases are introduced into the atmosphere?
a forest fires
b. respiration
C. photosynthesis
d. burning of fossil fuels

Select the word from the list that best fits the definition a system made of 25 satellites

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

Energy stored in the bonds that hold together the atoms and molecules of all substances is called a. kinetic energy. b. electrical energy. c. mechanical energy. d. chemical energy.