Why do we see seasons on Earth?
Revolution
Seasons occur because of the Earth's revolution around the Sun combined with the tilt of its axis, which changes the angle and duration of sunlight received by different parts of the Earth through the year. Rotation causes day and night, not seasons.
Which natural resource is renewable but exhaustible if misused?
Which disease spreads mainly through polluted water?
Kwashiorkor mainly occurs due to lack of:
Which food gives energy and body-building nutrients?
Which organ removes urea from blood?
Which system works together with the circulatory system to supply oxygen?
Which plant part mainly helps in water absorption?
Which property helps to distinguish iron from aluminium?
Which property of matter always remains constant?
In the first week of which month, Van Mahotsav is celebrated in India?
How many Ramsar conservation have been enlisted from India so far? (as of 2019)
Which of the following statement is correct?
I. Converting kitchen waste into compost through worms or red earthworms is called vermicomposting.
II. It is not possible to convert plastics into less harmful substances by composting.
Where have a team of scientists from Delhi University and the Wildlife Institute of India discovered a new species of ‘paddy frog’ in June 2019?
Which of the following statement is correct?
I. CO 2is not a greenhouse gas.
II. Clean and drinkable water is called drinking water.
Which of the following is correct regarding mesosphere?
I. This is the third layer of the atmosphere.
II. Meteorites burn up in this layer on entering from the space.