P-2 Introduction to Microbiology — Science STD 10 — Question

 It is possible to produce energy from mW to MW using solar photovoltaic cells.

The Earth is the largest ecosystem.

There are clusters of thick forests in the Western Ghats of India.

Write scientific reason.
The coin disappears in a vessel as it is seen from a specific location. But as soon as the water is poured into the vessel to a certain level, the coin appears.

When copper articles exposed to air for a long time, gets corroded.

Concentrated hydrochloric acid reacts more vigorously with calcium carbonate than dilute hydrochloric acid.

There is a need for classification of animals.

Give scientific reasons:
Duck billed platypus is a connecting link.

Hydroelectric energy, solar energy and wind energy are called renewable energies. Why?
###
Hydroelectric energy, solar energy and wind energy are called renewable energies.

Our body irritates if it comes in contact with a jelly fish.