The sun is a?
1). Producer of water
2). Secondary source of energy
3). Primary producer of energy?
4). Teritiary Producer of energy
1. Which of the following have the same unit ?
2. Which of the following instrument is used to measure Soil Water Tension?
3. It is easier to roll a barrel full of coal tar than to pull it because
4. In science a push or pull of an object is called ________.
5. A sphere rolls down on two inclined planes of different angles but same height, it does so
6. Which one of the following determines the sharpness of image in a camera ?
7. Which one of the waves have the longest wavelength
8. Energy that is produced commercially from coal is called
9. The scientist who first sent electromagnetic waves to distant places is