true/false
(a)Planet Uranus is unique in Solar System.
b)Life in Oceans is abundant around the margins of continents and islands.
c)Ergonomics is the study of interaction of organisms with their environment.
d)In nuclear fission the masses of resulting nuclei is exactly equal to the sum of masses of fusing nuclei.
e)Steps in most food chains are limited to four or five.
Answers
(a)False
(b)True
(c)True
(d)False
(e)True
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Answer:
a) False because unique planet of solar system is Earth because it has everything that favours the human survival.
b) True because life was first started in the ocean and there many variety of species and animals found in the ocean than on the land.
c) False because Ergonomics is the study of people who works in a specific environment. It is mainly concerned with designing of products, arranging the system. Environmental Ecology deals with the ‘study’ of interaction between environment and organism.
d) False because during nuclear fission when atom breaks into two or more smaller piece a huge amount of energy is released and there is difference in masses of resulting nuclei and the sum of masses of fusing nuclei and this is called as mass defect.
e) True because if food chain steps are more than four of five less energy transfer takes place due to long food chain which can lead to the extinction of top animals.