71.   They make oxygen with a chemical reaction that generates tremendous heat but is safe when the canisters are installed in a seatback or overhead compartment.

72.   They generate heat within themselves.

73.   They make oxygen with a chemical reaction that generates tremendous heat but is safe when the canisters are installed for their intended use in a seatback or overhead compartment.

74.   They work by mixing chemicals that undergo a reaction that gives off oxygen, but the same reaction also generates heat.

75.   They can require large amounts of electric current, and thus generate substantial heat.

76.   They generated such heat when they exploded that steel girders supporting the building melted.

77.   This will prevent any problems that could be caused by putting frozen batteries into a device that generates heat when it is on.

78.   When a tire is underinflated, there is more flexing in the sidewall, which generates more heat.

79.   All electrical devices generate heat, which is why computers have fans inside or cases designed to boost air flow.

80.   As ovulation occurs, the increased production of progesterone generates greater heat in the body, and the body-at-rest temperature rises.