Commercial cork is obtained from the species of
1). Berberis
2). Quercus
3). Salix
4). Betula
A freshwater fish must continuously
1). Acquire water and get rid of salt
2). Get rid of both water and salt
3). Acquire both water and salt
4). Get rid of water and acquire salt
How many bones are there in a human body?
1). 206
2). 205
3). 150
4). 300
According to scientists, the Big Bang occurred approximately ? years ago.
1). 100 million
2). 100 thousand
3). 1 billion
4). 15 billion
Anthrax is a serious disease of
1). cattle
2). poultry
3). fish
4). all of these