"Ozone layer acts as an umbrella to the biosphere".
Justify the Statement.

"Ozone layer acts as an umbrella to the Biosphere". a. Justify the statement. b. Suggest the ways to reduce the ozone layer depletion.

"Ozone layer acts as an umbrella to the biosphere". Suggest the ways to reduce the ozone layer depletion.

Explain i) ozone layer acts as an umbrella for the earth against the harmful radiation from sun. ii) The wooden shelf under thé reagent bottle containing conc. H_2 SO_4 blackens after sometime. iii Precipitation of secònd group sulphides in qualitative analysis is càrried out with H_2 S in presence of HCl and not nitric acid.

Viruses are intracellular obligate parasite. Justify the statement

PVC and Bakelite are differentiated based on the action of heat. Justify the statement.

Placenta acts as an endocrine gland. Justify the statement

Diborane has an unusual structure. Justify the statement with figure.

Heart wood is resistant to micro organisms. Justify the statement.