List of top Science Questions on Environmental Science asked in CBSE Compartment X

What is meant by biomagnification?

Assertion (A): An ozone molecule (O$_3$) is formed from three atoms of oxygen.
Reason (R): Ozone protects life on Earth from harmful ultraviolet (UV) radiation.

(a) Write one advantage of using cloth bags instead of plastic bags.
(b) Mention any two methods for safe disposal of solid waste in urban areas.