The snail kite (rostrhamus sociabilis) is a specialist that feeds on only one specific type of snail. by comparison, the mallard duck (anas platyrhynchos) is a generalist that feeds on diverse food sources. whereas the snail kite has a very limited range, the mallard duck has a very broad range. the snail kite's diet is an example of a(n)
(a) habitat
(b) limiting factor
(c) ecological niche
(d) range of tolerance

Health terminologyan incision of the thyroid gland is called:

Write a journal at least 1 paragraph. in your mind, how do you define psychology right now? when do you think psychology began? what do you think modern psychologists do?

Which of the following represents the results of a review of well-controlled studies of vitamin c supplementation on the resistance to, and recovery from, colds? there was a reduction in the duration of colds by 50% on the average. there was a slight effect on reducing the duration and severity of colds for people taking vitamin c supplements. there was a significant reduction in the duration of colds in people who consumed at least one gram a day. there was a significant reduction in the number of colds only in people who consumed > three grams per day.