1. Which of the following is NOT an advantage of using biopesticides?
degrade rapidly and are easily washed away by water
do not leave pesticide residues on crops
can be produced synthetically and are therefore inexpensive
are less toxic to humans and the environment
2. A cyclic food allergy is one that:
occurs every time the offending food is eaten.
develops on a fixed time frame, such as once a month.
develops slowly over time.
occurs during times of physiological stress, such as during illness or surgery.