Improper use of cleaning agents in food-contact areas can add which of the following to food?
a. glass, metal, insects, and dirt
b. methyl mercury
c. dioxins
d. direct additives

which one of the following organisms can be transmitted by cats to humans through cat feces?
a. shigella
b. toxoplasma gondii
c. escherichia
d. listeria monocytogenes

1. A. Glass, metal, insects, and dirt

The glass, metal, insects, and dirt can be added to the food which is placed in a vessel which is not cleaned properly with a cleaning agents. These are natural contaminants the probability of which is more possible in the food as compared to the other options.

2. B. Toxoplasma gondii

Toxoplasma gondii is a microscopic parasitic organism which causes disease named as toxoplasmosis. This organism spread by the feces of cats, eating uncooked meat, can be transmitted from the mother to infant during pregnancy. The symptoms of the disease includes fever, muscular pain and weakening of the immune system.

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers

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