Accreditation standards:
a. usually go down over time, so accreditation is easier to obtain. b. stay the same from year-to-year. c. are continuously being raised.

how many american zoos participate in animal conservation actions?
a. under 50 b. 50-100 c. 101-150 d. 150-200 e. over 200

american zoos must be re-accredited by the aza:

every five years.

every ten years.

every twelve years.

biaza is:

question 10 options:

a zebra conservation association.

a british association focused only on zoos.

an organization of zoos and aquariums.

the steller’s sea cow was not:

question 12 options:

found off the u. s. east coast

a kelp-eating species

driven to extinction by hunting and competition for its food source

the largest member of the order sirenia

Answer 1 is "Are continuously being raised".

So the answer for that is C.

Another question: The Steller’s Sea Cow was not:

Found off the U.S. East Coast

BIAZA is:

an organization of zoos and aquariums.

How many American zoos participate in animal conservation actions?  

Over 200

American Zoos must be re-accredited by the AZA:

Every 5 Years

stratosphere: as the altitude increases, the air temperature increases. the stratosphere has a layer of ozone, called the ozone layer. this layer absorbs most of the ultraviolet radiation from sunlight. this results in the stratosphere being warmer.

chert is a sedimentary rock composed of microcrystalline or cryptocrystalline silica. with this little bit of information, you can come to the conclusion that your answer is c.  

explanation: