A one - way relationship where one species benefits at the expense of another is called _____.
1). Commensalism?
2). Competative exclusion?
3). Parasitism
4). An obligatory relationship
1. Which planet is also referred to as a 'Dwarf planet'?
2. Heat flows as a result of difference of ________
3. Total number of colours exists in sunlight
7. The shape of a rain drop is spherical?due to -
8. A person can jump higher on the moon's surface than on the earth because :
9. Electrostatic precipitator is used to control the pollution of
10. What is the unit of the physical quantity, Electrical conductance?