Answer:
from
force =mass x acceleration
mass = force/acceleration
m = f/a
m = 7.5/15
m=0.5kg
Answer:corrosion (i believe)
Explanation:
The gravitational energy is going up subtracting the energy that was on the ground
He discovered several species of finches that varied from island to island and it helped him make his theory of natural selection.
hope this helps !