Because South Sudan gained independence from sudan
The difference between a controlled variable and a constant is that a constant variable does not change through the experiment and a controlled variable can change.
The purines always pair with the pyrimidines
Answer:
compound
Explanation:
a compound is a substance that has been formed by two or more elements .
Answer:
The ocean.
Explanation:
It starts with the ocean and then there is evaporation condensation and precipitation and then runoff.
