1. Not all animals have the same type of digestive system. In cows and other ruminants, several different stomachs are part of the digestive system. Why do different animals have different digestive systems?
2. How will light affect melatonin secretion? Choose the best answer.
3. Why do the lymph nodes typically swell up when a person gets sick?
4. Match the correct symptom with overexpression of LH, per the article:
5. Why do babies have more bones than adults?
6. Identify the type of innervation that stimulates saliva flow:
7. When scientists compared the pineal glands of two birds, one nocturnal and the other diurnal, they noticed that the pineal gland of the nocturnal bird was smaller and less connected. Which hypothesis below supports this finding?
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