nitrogen di oxide

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September 2, 2022 Recommended

Shelter – Definition, Need and Types

The dictionary meaning of a shelter is – something beneath, behind, or within which a person, animal or anything is protected from adverse conditions, and where it can reproduce is called as a shelter.

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January 14, 2022 Recommended

Human Activities and Environment

Waste too is found in three states- solids, liquids and gases. Liquid wastes such as different types of chemicals, useless medicines, detergents, pesticides, oil, automobile wastes etc. spread on the soil surface and make it poisoned. Decomposition and burning of things on ground produce different gases that pollute the air.

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September 23, 2021 Recommended

Important Processes of Reproduction

When both the ovaries are fully mature, they alternatively produce ova at the interval of 28 days. Release of ovum into the uterus through the fallopian tube is called as ovulation.

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July 31, 2020 Recommended

Fern species that grow on old walls in

Ferns belong to Pteridophytes and grow on high altitudes in moist cold places. These don’t need any fertile soil. Since Ranchi or the most part of Jharkhand is located on high land its climate is rather different and somewhat similar to those area of mountains. The author reports here the two fern species that preferably grow in this region that too on old walls.

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January 8, 2022 Recommended

Flow of Energy in an Ecosystem

Sun is the only source of energy in the biosphere. Every living being can get its share of energy through food only and the energy is directly or indirectly obtained from green plants only.

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