Which one of the following is NOT in favour of the conservation
of nature?
(a) switch off the bulb when not in use
(b) close the tap immediately after using
(c) dispose polypacks after shopping
Which one of the following methods is most appropriate to check
soil erosion on steep slopes?
(a) shelter belts (b) mulching (c) terrace cultivation
Which one of the following is NOT a factor of soil formation?
(a) time (b) soil texture (c) organic matter
Construct each of the question and give justification :
A triangle if its perimeter is 10.4 cm and two angles are 45° and 120
Construct an equilateral triangle if its altitude is 6 cm. Give justification for your construction.