Endospores form during
a. binary fission.
b. sunlight hours.
c. respiration.
d. harsh environmental conditions.

Which of these is most likely to prevent pregnancy? a. tracking of female body temperature to identify ovulation times b. proper condom use c. male withdrawal before ejaculation d. proper spermicide use

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

Waste is deposited into in thin layers which are then compacted and covered with soil.