Answer:
B. Chemical weathering
Explanation:
Chemical weathering is the decompositon or decay of rocks into soil or earth materials.
Acid rain is made up of dissolved ions which can act as a good reagent to weather rocks.
Answer:
because blood is pumped out of the heart at greater pressure from these chambers compared to the atria.
The answer is arms race. An example is the cold war era nuclear arms race between the United States and the Soviet Union. Today's superpowers such as China, Russia and United States are also engaged in an arms race for the most technologically advanced weaponry.
