Here, ‘barriers’ is correct. WE can understand this because if it was ‘barrier’ alone, the article ‘a’ would have preceded it and we can see that we are talking about a set of tiger reserves, hence ‘barriers’ is only correct. On the flip side, sets of tiger reserves that share less genetic variation must have barriers or landscapes that impede movement and connectivity.
The speed of the cycle changes with the change in speed of wind. Time taken by cycle to travel 20 km., is 2 hours when wind is in the direction of the c...
‘A’ and ‘B’ started moving towards each other at same time with a speed of 12 km/hr and 16 km/hr, respectively. If the distance covered by ‘B ...
Vicky and Vikram start running simultaneously around a rectangular track of length 800m from the same point at speeds of 35 km/hr and 25 km/hr. When wil...
Train P starts from Lucknow to Dehradun at 11:55 am with an average speed of 45 m/s. Train Q starts from Dehradunto Lucknowat 1:35 pm with an average sp...
Excluding the Stoppages i.e. Non-stop, the speed of a Bullet train is 810 km/h and including the stoppages, it is 720 km/h. calculate for how many minut...
A motorbike travelled for the first 180 km at a certain speed in 4 hours. After that, the speed of the motorbike decreased by 5 km/h. If the motorbike t...
'A' and 'B' are running on a circular track of length 5000 metres. 'A' is running clockwise at 6 m/s while 'B' is running anti-clockwise at 8 m/s. Find ...
A person crosses a 600-metre-long street in 10 minutes. The speed of the person, in km/h, is:
A train 200 m long passes a pole in 10 seconds. How long will it take to pass another train 300 m long running in the opposite direction at a speed of 3...
Ram needs to cover a certain distance to reach his destination. When he drives at a constant speed of 24 km/h, he arrives 2 hours later than planned. Ho...