The word "precursor" means "preceding requirement". This means that before a student is able to take courses in Calculus, it is required that the passed all the requirements for his Algebra. Calculus is a course which involves the study on derivatives and integrals.
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Welp... Im late but I think the answer is "Barking is a present participle describing the dog."
sorry...
Explanation:
Could you elaborate a bit?
Answer: The author wants to say that we should not take our physical activity away from our study because it is very important to us and those who do physical activities are better at studies than those who do not take part(participate) in extracurricular activities.
The answer is A. Rubrics are often organized as grids.
