The target heart rate zone is determined by taking
a. maximum heart rate x 60% and 75%
b. max heart rate x 50% and 60%
c. max heart rate x 70% and 90%
d. max heart rate divided by 50% to 75%

How do nicotine and tobacco cause cancer? by decreasing blood-sugar levels by damaging or changing a cell's dna by increasing heart rate by increasing phlegm and mucous production

Which food preservation method can people use at home? a. fermentation b. irradiation c. pasteurization d. thermal processing

Which practice is harmful to the land? a. using animal waste as fertilizer b. composting with peels from commercial fruit c. throwing paint cans in the garbage d. cutting the lawn with a gas-powered mower