A nonprofit conservation organization receives a sizeable donation and decides to purchase several thousand acres of 'high desert' in southern California. This particular type of desert has an intermediate level of species diversity and few unique species. However, much of the original areas of high desert have been converted to suburban housing and shopping. The decision by the nonprofit to preserve this area was most likely based upon what conservation strategy?
A. Conservation of endemic species hotspots
B. Conservation of representative habitats
C. Conservation of megadiverse areas
D. Conservation of single species
B. Conservation of representative habitats
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Sharks are osmoconformers that maintain osmolarity with the saltwater but keep ion concentrations similar to osmoregulators. To do this they must use non-ions to osmoregulate, such as urea. As such sharks take on excess ions from the water because their bodies are at a significantly lower ion level than saltwater. How are the excess ions eliminated?
A. diffusion across the gills B. active transport across the gills C. Rectal gland D. none of the answers
Which of the following is an induced defense?
A) bright coloration of poison dart frogs B) high-pitched alarm calls by a squirrel C) background color matching by a chameleon D) walking sticks resembling twigs
Choose the letter of the best match from the following:A. hotspotB. habitat lossC. edge effectsD. megafaunal extinctionE. extinction vortexBecome an increasing problem as habitat size shrinks.
Fill in the blank(s) with the appropriate word(s).
If similarities between two structures in different organisms reflect independent evolution, these structures are
A. Homologous B. Heterologous C. Vestigial D. Homeotic E Analogous