1) Canyon may be formed due to the effect of a) Deposition only b) erosion and deposition c) Erosion only 2) Canyon take ...........of years to be formed a) hundreds b) millions c) tens 3) lichens produce ............... on rocks that dissolve minerals found in these rocks a) acids b) water c) rain 4) Canyon can be formed by the effect of a) plants b) animals c) water 5) All canyons are similar in shape of rock and colors. a) true b) false 6) If the rain falls over small Canyon for several times per year a) its depth increases b) its depth decreases c) Its not affected 7) All canyons must have V shaped. a) false b) true

द्वारा

लीडरबोर्ड

दृश्य शैली

विकल्प

टेम्पलेट स्विच करें

ऑटो-सेव पुनःस्थापित करें: ?