Question 2:

 _______ is necessary for our existence, as it forms the life support system of our planet and its inhabitants

Question 3:

Earth is made up of four spheres ____________.

Question 4:

 Animals that feed directly on plants are called __________

Question 5:

Variation in  __________ enables different species to adapt to challenges such as environmental conditions, shrinking habitats, new diseases, and helps them to survive in future.

Question 6:

 _________ is the life supporting zone of Earth, where litosphere,atmosphere, and hydrosphere meet and interact.

Question 7:

There is bound to be _________, when roads are planned and constructed that are necessary to meet human needs. But what can be done is that we make sure that development does not causes negative impacts on biodiversity.

Question 8:

____________ is always larger than a __________. The former contains many of the latter.

Question 9:

 Plants, animals, and micro-organisms form the _______ components of an ecosystem.

Question 10:

 _________ acts as the life support system of our planet, and is the strong link between our well-being and our sustainable future.