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Answer:
The description corresponds to an observational study.
Explanation:
In Observational studies, researchers observe the effect of a risk factor without changing what is exposed to it or its conditions. On the other hand, in an experimental study, researchers can introduce a change and study the effects of it.
Answer:
to ensure that powers of three branches of government are separated.
Explanation:
The establishment of three branches of government: legislative, executive, and judicial is meant to ensure separation of powers. Each branch of government has its own powers and responsibilities to ensure that the government works effectively and citizens' rights are protected.
The legislative branch makes laws, the judicial branch can declare those laws and the executive branch can veto those laws with the consent of the president.
Answer:
When you add lemon juice to water, the water changes color. Then, when you add sugar to the mixture and stir, the sugar dissolves and is no longer solid white. Lemonade is an example of a solution: a mixture of one or more substances dissolved evenly into another substance.
Explanation:
