In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.
Every evening a ____________ of wolves descends into the valley to hunt.
In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.
The velocity of an object is the rate of change of its position ______ respect to a frame of reference.