Answer:
Burning Paper
Explanation:
This is a chemical reaction, because new substances are formed
Fossil fuels burn: cause
Glaciers melt: effect (mostly; the melting ice caps are a positive feedback loop of sorts)
Climates change: effect
Rain falls in unusual amounts: effect
Cities become more industrialized: cause
Human population grows worldwide: cause
Answer:
Net force = 800 – 650
= 150 N
150 = (800 ÷ 9.8) a
a = 1470 ÷ 800
= 1.8375 m/s^2, downwards
Energy (C) is fully described by its magnitude.
There's nothing else about it to measure.
The other four things on the list are all vectors.
They need directions to go along with their magnitudes.
