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trapecia [35]
3 years ago
15

4. Provide two excerpts from the article that demonstrate the rules of

Chemistry
1 answer:
Evgen [1.6K]3 years ago
3 0

Answer:

In the article it says “

new research by British and American scientistssuggest a chemical not controlled by the international treaty poses apotential risk to the Earth's protective ozone layer.

“ which means America

and Britain retested a certain hypothesis by The Montreal Protoco

Explanation:

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In this experiment, the experimental group is ice, the independent variable is sunlight while on the other hand, the dependent variable is block of ice.

<h3>What are dependent and independent variables?</h3>

Dependent variable is a type of variable in which a variable whose value depends on another variable while on the other hand, independent variable is a type of variable in which a variable whose value does not depends on another variable. Dependent variable is denoted by X whereas the independent variable is denoted by Y.

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