Some research suggests that individuals who take both vitamin c and zinc at the onset of the common cold experience fewer cold symptoms and recover more quickly than individuals who do not take these nutrients. what is the best explanation of why vitamin c and zinc could reduce the intensity and duration of the common cold? a. vitamin c and zinc are required for the absorption of iron, which is needed by the immune system. b. both vitamin c and zinc are involved in immune system functions. c. vitamin c and zinc are required for the absorption of vitamin k, which is needed for wound recovery. d. both vitamin c and zinc are involved in wound recovery.

Describe how alleles and genes are related

How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.

Use this dichotomous key for insect identification to identify the insect shown. 1. a. insect has one pair of wings. order diptera b. insect has two pairs of wings. go to #2 2. a. front wings thicker in texture than hind wings go to #3. b. front and hind wings are same texture throughout. go to #4 3. a. front wings are short order dermaptera b. front wings cover entire abdomen order coleoptera 4. a. wings with scale on all parts of their area. order lepidoptera b. wings without scales go to #5. 5. a. hind wings smaller than front wings. order ephemeroptera b. front and hind wings nearly equal in size. order odonata the insect pictured is in the order diptera. ephemeroptera. coleoptera. odonata.