Forests: Our Lifeline — Science STD 7 — Question

A bus travels 54 km in 90 min. The speed of the bus is

Earthworms and frogs breathe through their skin because of which the skin of both the organisms is:

Yeast is used in wine and beer industries because it respires:

Why is it essential to remove pollutants from wastewater before it enters a water body or reused?

Angora wool is obtained from:

Corrosion is a chemical reaction that involves :

In convection, heat is transferred:

The time taken by the earth to complete one rotation about is own axis is called:

Which of the following changes is accompanied by sound?

"By providing clean water and sanitation to the poorest people on the planet, we can reduce poverty and suffering and ensure education for all children".
The above words are given by: