Which of the following ocean the circulation of currents are anticlockwise?
a) Pacific Ocean
b) South Atlantic Ocean
c) north Atlantic Ocean
d) none of these
The Role of Marine Biodiversity in our Environment:
Which of the following represents the variety of life in the ocean and seas?
a) marine
b) biodiversity
c) both a & b
d) none of these
Which of the following are important roles of biodiversity in
physical environment?
a) supply 50% oxygen to atmosphere
b) 26% carbon dioxide omitted
c) fishes provides high quality proteins
d) all of these
Which of thefollowing are possible threats to oceans?
a) oil & gas drilling
b) pollution
c) over-fishing
d) all of these
What is the length of Grand Canyon River?
a) 445 km
b) 446 km
c) 447 km
d) 448 km
