Fill in the blank: The unwanted plants present in a crop field are called ___.
Answer
Weeds
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Solution
Weeds are the invasive species that grow in a crop field. They compete with the crops for water, nutrients, space and sunlight. Hence, they can hamper the growth and development of crops and decrease their yield.
A car covers a distance in \(40\) minutes with an average speed of \(60\ km\) per hour. The average speed to cover the same distance in \(30\) minutes is ( )