Questions

What has 4 Eyes But cannot see is Mississippi.

The wording of Mississippi has 4 'i''s. But it can't see.

Biological Control: This method is very effective. One pest is destroyed by another organism. For example the aphids are killed by lady beetle. The prickly pear is eradicted by cochineal insect. Here the advantage is, one does not use harmful chemicals which may get into the host plants.

Based on conventionality in deriving energy, energy sources could be classified as

Conventional ::

coal, oil, hydro, nuclear, etc... sources which can be used up or exhaustible.

(and)

Non - conventional ::

solar, wind, tidal, geothermal, biogas, etc... sources which are not exhausted.

Among the given options, Geothermal energy is the alternative energy source among all the choices that are given in the question, that is exhaustible.

The Ministry of Human Resource Development, formerly Ministry of Education in India
Ramesh Pokhriyal the Union Cabinet Minister of Human Resource Development in 2019. He represents the Haridwar Parliamentary constituency of Uttarakhand in the 17 Lok Sabha elections.

Prakash Javadekar was the former Human Resource Development Minister in 2018.

Brainstorming is an example of a problem solving technique of severe thinking.