Why is a food web a more accurate representation of the flow of energy through an ecosystem than a food chain?
a. a food web shows multiple pathways of energy flow through the ecosystem.

b. a food web shows a single pathway of energy flow through the ecosystem.

c. a food web has limitations with the organisms involved.

d. a food web does not show all the organisms.

Why is it important that salads have crunch factors, color, and appropriate dressings? a. the salad will appeal to customers with varied tastes. b. it is easy to get away with poor quality ingredients. c. it is a good way to use up leftovers. d. it will give the customer something to enjoy in each bite. e. it use more products.

Which of the following must be treated under the care of a physician and is mainly considered a medical condition? a. scoliosis b. lordosis c. kyphosis d. all of the above

Hiv is inactivated in the laboratory after a few minutes of sitting at room temperature, but the flu virus is still active after sitting for several hours. what are the practical consequences of these findings? a) hiv can be transmitted more easily from person to person than the flu virusb) the flu virus can be transmitted more easily from person to person than hivc) this property of hiv makes it more likely to be a pandemic than the flu virusd) disinfecting surfaces is more important to reduce the spread of hiv than the flu