Why is it not possible to make use of solar cells to meet all our energy needs? State at least three reasosn to support your answer

Leaves of a healthy potted plant are coated with vaseline to block the stomata will this plant reamain healthy for long? state three reasons to support your answer

Which way of using cow-dung as fuel for domestic use is better:use of cow-dung cakes or use of cow-dung in a bio-gas plant?give three reasons in support of your answer

Synthetic polymers are finding applications in almost all spheres of life and are making our life comfortable. Their large scale use has been based on their relative inertness to environment Process giving them durability for long time. However, their long durability is not altogether an advantage. These solid wastes remain undegraded for quite a long time and their disposal has created a serious problem of waste management. If the overuse of plastics continues, it will pose a serious threat to all of us. After reading the above passage, answer the following question : Is it advisable to continue with overuse of plastics due to their immense use in our daily life?

State whether the "Or" used in the following statement is “exclusive "or" inclusive. Give reasons for your answer. All integers are positive or negative.