What was the student’s independent variable? A. The amount of salt added to the extraction sample
B. The type of sample from which DNA was extracted
C. The mass of DNA collected from samples
D. The size (mass) of the sample being tested

she will be charged $6

step-by-step explanation:

48 dollars divided by 200 beads equals .24 dollars a bead

.24 multiplied by 25 more beads equals 6 dollars as the total cost

here is the answer

water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. weathering is the breaking down or dissolving of rocks and minerals on earths surface. once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.