Biology, 12.10.2020 14:01 salvadorperez26
As the puck falls, the amount of potential energy it has decreases. Why?
a. It is lost to the air friction
b. It is released as sound energy
c. It is changed into kinetic energy
d. It is stored in the puck
Answers: 1
Biology, 21.06.2019 19:30, AaronEarlMerringer
Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.
Answers: 1
Biology, 22.06.2019 02:30, loveashley1
What is the inability of an individual or a society to achieve a minimum standard of living known as ?
Answers: 1
Biology, 22.06.2019 03:00, seahorse0
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.
Answers: 1
As the puck falls, the amount of potential energy it has decreases. Why?
a. It is lost to the air f...
Mathematics, 21.03.2020 00:26
Mathematics, 21.03.2020 00:26
Mathematics, 21.03.2020 00:26
Mathematics, 21.03.2020 00:26