Activity #1 1. Reset the system and make sure the Constant Parameter button is set to None. 2. Pump 50 heavy gasmolecules and 50 light gasmolecules in the gascontainer. How do the velocities of the heavy gasmolecules compare to those of the light gasmolecules? 3. Use the Heat Control to add energy. Notice that the thermometer shows an increasing temperature. What happens to the velocities of the gasmolecules? 4. Use the Heat Control to remove energy. What happens to the velocities of the gasmolecules?

Coquina, a type of limestone, forms from shell fragments that settle on the ocean floor. what type of rock is coquina?

Discuss the functions of epithelial connective nerviud and muscular tissues

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.