Lack of which of the following will kill you faster?
Soil
Water
Food
Air
An average human can sustain without food for more than 20 days, without water for 3-4 days and without air for 3 minutes.
So lack of air can kill us faster.
Desert soils lack humus because of which of the following reasons?
Which of the following measures will you take to avoid soil pollution?
Which method will you use to separate the substances in each of the following mixtures?
(a) water + alum
(b) camphor + sand
(c) water + soil
(d) tea + tea leaves.