Question

1. researchers ask questions they assume can be answered.

true
false

1. pesticides can enter the food chain directly or indirectly.

true
false

1. which of the following is not a part of the gi tract?

mouth
small intestine
large intestine
liver
rectum

Explanation:

• For question 75, researchers formulate questions with the expectation of finding answers, so it's true.
• For question 76, pesticides can contaminate plants directly and then move up the food - chain, or contaminate soil/water which indirectly affects the food - chain.
• For question 77, the GI tract consists of the mouth, small intestine, large intestine, and rectum. The liver is an accessory organ to digestion, not part of the tract itself.

Answer:

1. True
2. True
3. Liver