14. A the sooner...the better是比较状语从句,表示"越早……就越好"。 15. D 导致问题发生的原因用cause 16. B 世界过于拥挤(crowded) 是环境恶化的根本原因。 17. A use up表示"用完,用尽"。 18. B with no hope of replacing them表示"现在还没有希望用其他东西来替代它们"。 19. D provide .....
完形填空 Ecology(生态学) is a science of how living creatures and plants exist together and develop on each other and on the local government. Where an environment is undisturbed the ecology of an area is 1 balance
完形填空 Ecology(生态学) is a science of how living creatures and plants exist together and develop on each other and on the local government. Where an environment is undisturbed the ecology of an area is 1 balance
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完形填空 Ecology is a science of how living creatures and plants exist together and develop on each other and on the local government. Where an environment is undisturbed, the ecology of an area is 1 balance, but if a creature dies out or a new specie
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Ecology is a branch of science that deals with the relationship between organisms and their interaction with the environment. Explore the types of ecology and its importance @ BYJU'S.
Ecology (生态学) is the science of how living creatures and plants exist together and depend on each other and on the local environment. Where an en?vironment is undisturbed the ecology of the area is 1 in nature balance but if a creature dies out or a new species is 2 then the ecol...
It is a sub-discipline of biology, which is the study of life. There are many practical applications of ecology in conservation biology, wetland management, natural resource management (agriculture, forestry, fisheries), city planning (urban ecology), community health, economics, basic & applied ...
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