A student tested the effects of the rate of the potato enzyme catalase; the student placed shaved potatoes in 3 different solutions of hydrogen peroxide, each with a different temperature. The student then measured the rate of the reaction by measuring the height of the bubbles given off in each test tube. The results to the experiment are displayed below, which of the following represents the independent variable in this experiment?

✿   this landform has a high elevation and a high relief

✿   this landform is a mountain

i got something better   a catchphrase here it is

ahem  

ahem

what the squwock

explanation:

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.