Man carries out deforestation to provide space for buildings and farms. Some also cut down trees to provide wood for furniture and paper manufacturing. Which of the following would possibly result from the above activities?
(i) Top soil erosion may occur.
(ii) Some animals may become extinct.
(iii) There may arise a problem of global warming.
(iv) Some possible sources of natural drugs to cure diseases may be lost.
A (i) and (ii) only
B (iii) and (iv) only
C (i), (ii) and (iii) only
D (i), (ii), (iii) and (iv)
Kusum categorised animals on the basis of their habitats. She made three groups of three organisms each. By mistake, she placed one wrong member in each group. Identify the wrong member and select the correct option.
Group 1- Penguin, Camel, Polar bear
Group 2- Kangaroo rat, Meerkat, Muskox
Group 3- Dolphin, Pomfret, Hedgehog
APenguin of group 1 should be interchanged with pomfret of group 3.
BPenguin of group 1 should be replaced with snake.
CCamel of group 1 should be interchanged with muskox of group 2.
DHedgehog of group 3 should be replaced with jellyfish.
Reference of jellyfish in question has to be replaced with with silverfish
Kim ranks twelfth from the top in a class of forty six students. What will be her rank from the last ?
The answer is C, 35th but the trainer is showing the answer B. Do you agree with me?
A stone is allowed to fall from the top of the tower 100 m high and at the same time another stone is projected vertically upwards from the ground with a velocity of 25 m/s. The two stones will meet above the ground at height of
A 20 m
B 10.2 m
C 11.2 m
D 15.5 m
All options are wrong