Forestry

Plants and animals

Weeds and trees

Biotic and abiotic

Frogs and men

Temperate region

Tropical region

Torrid region

Equatorial region

2.65

2.7

2.75

2.8

Cyanides and phenols

Chlorides and fluorides

Carbonates and sulphides

Bicarbonates and chlorides

They are absolutely devoid of xylem

They totally lack phloem

They do not have stomata

The supporting tissues and xylem are feebly developed

Genetic diversity

Species diversity

Ecosystem diversity

All of the above

A crisis based on the changing price of oil and load shedding

The search for acceptable and practical alternative source of energy

The environmental effects of a continuing dependence on fossil fuels

All of the above

Photochemical smog

Dry acid deposition

Industrial smog

Wet acid deposition

Oxygen and nitrogen

Phosphorus and sulphur

Phosphorus and CO2

Phosphours and nitrogen

World forest day

World environment day

World red cross day

World food day