Should be , b
. Not positive tho
1) you want to increase friction when it gets cold. If you're outside and it's really cold, you're going to rub your hands to warm them up, therefore friction is increasing
I'm not do sure about decreasing.
2Al +3CuSO4=Al2 (SO4)3+3Cu.
is the balanced equation.
HOPE IT HELPS YOU '_'
Answer:
the plant population over time has decreased. this could make all other organisms above the plant population numbers decrease as well.
Explanation:
Uranium-238 is the element that undergoes decay to yield uranium-234
