Carbon dioxide concentrations have increased substantially since the beginning of the industrial era, rising from an annual average of 280 ppm in the late 1700s to approximately ______ ppm in 2021.

Environmental Protection Act was enacted in the year

Deficiency of Vitamin A causes

The formula for Ethane is

The building units of oligosaccharides and polysaccharides are

The spectral bands used in Greenness Vegetation Index are (A) Red (B) Blue (C) Green (D) NIR (E) MIR
Choose the correct answer from the options given below:

The consumption of water containing high levels of nitrate–N can lead to

The WHO standard of drinking water for nitrate is

Emissivity of a black body is

The common table sugar is