What physical and behavioral adaptations do zebras have that them evade predators?
a.
live in families and travel in large numbers for protection; bunch together to confuse the predator with their stripes or run away at speeds up to 40 m. p.h; .sharp teeth and strong hoofs to defend themselves
b.
live solitary lives unless feeding when they bunch together for protection; short legs and necks so predators have harder time holding on when attacked; stripes so they blend in with their surroundings
c.
live in families and travel in large numbers for protection; sharp teeth for defense; develop stripes as they mature to better blend in with the herd because they are provided less protection from their parents
d.
feed primarily at night for safety from predators; scatter to feed so predators have a harder time finding them; long necks to see over tall grasses and spot predators before they get too close

Using the periodic table, determine which material is most likely a good conductor

To answer this question, researchers studied populations of the dusky salamander (desmognathus ochrophaeus) living on different mountain ranges in the southern appalachian mountains. the researchers tested the reproductive isolation of pairs of salamander populations by leaving one male and one female together and later checking the females for the presence of sperm. four mating combinations were tested for each pair of populations (a and b)—two within the same population (female a with male a and female b with male b) and two between populations (female a with male b and female b with male a). the proportion of successful matings for each mating combination was measured. for example, when all the matings of a particular combination were successful, the researchers gave it a value of 1; when none of the matings were successful, they gave it a value of 0. then the researchers calculated an index of reproductive isolation that ranged from 0 (no isolation) to 2 (full isolation). the reproductive isolation value for two populations is the sum of the proportion of successful matings of each type within populations (aa + bb) minus the sum of the proportion of successful matings of each type between populations (ab + ba). the table provides data for the geographic distances and reproductive isolation values for 27 pairs of dusky salamander populations.

Which of the following determines the specificity of a dna probe? a. type of radiation b. level of enzymatic activity c. number of neutrons d. complementary base pairing