Answer:The purpose of rice paddies is to grow rice in dry areas or areas that don't get that much rain. Also, they are used by using flooded water to grow.
Explanation:
Answer:
five half lives
Explanation:
Half-life is the time required for a quantity to reduce to half of its initial value.
How many half lives it would take to reach 3.13% form 100% of it's initial concentration:
100% - 50% : First Half life
50% - 25%: Second Half life
25% - 12.5%: Third Half life
12.5% - 6.25%: Fourth Half life
6.25% - 3.125%: Fifth Half life
This means it would take five half lives to get to 3.125% (≈ 3.13%) of it's original concentration.
Number of neutrons is 121.
Spring scale
It's a tool used to measure force.
Copper and gold is the answer I believe