29.
all of the following practices can prevent time and temperature
abuse except
b.
c.
d.
thawing food in a refrigerator at 41°f (5°c)
chilling all ingredients used to make tuna salad.
leaving food in the refrigerator until all ingredients are ready to be mixed.
thawing steaks in a microwave and promptly refrigerating them
for later use.

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.

During the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

Long term exposure to waves can cause sunburns and skin cancer.