CBSE ENGLISH LANGUAGE & LITERATURE

Detailed explanation-1: -Through a process called photosynthesis, leaves pull in carbon dioxide and water and use the energy of the sun to convert this into chemical compounds such as sugars that feed the tree. But as a by-product of that chemical reaction oxygen is produced and released by the tree.

Detailed explanation-2: -Douglas-fir, spruce, true fir, beech, and maple are toward the top of the list for oxygen release.

Detailed explanation-3: -The trees that lose their leaves in fall, such as chestnuts, oaks, aspens, and maples, are called deciduous trees. Once they lose their leaves, most aren’t able to take in carbon dioxide gas from the air or produce any oxygen.

Detailed explanation-4: -We get oxygen by breathing in fresh air, and we remove carbon dioxide from the body by breathing out stale air. But how does the breathing mechanism work? Air flows in via our mouth or nose. The air then follows the windpipe, which splits first into two bronchi: one for each lung.

Detailed explanation-5: -An Indian household is usually incomplete without the presence of a sacred Tulsi plant. Every day, Tulsi gives out oxygen for 20 out of the 24 hours day. It absorbs toxic pollutants from the air such as carbon dioxide, carbon monoxide and sulphur dioxide.