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The cell membrane is the oter boundary of a cell that encloses its contents
2. Dinosaurs appeared before mammals (a)
The answer to the question above is letter "A. precision". This indicates the closeness of the values to one another. Accuracy indicates the closeness of a measured value to the accepted one. The percent error refers to the deviation of the value from the true value and significant figures refers to the number of digits in a measurement that are considered important.
Answer:
a food chain shows how the organisms are related with each other by the food they eat.
Explanation: