Consider the following statements regarding ecology:1. Climax ecosystem is a stage in the evolution of an ecosystem, at which all the species are in dynamic equilibrium among themselves as also with the environment.2. Ecological niche means all the physical, chemical and biological factors that a species needs in order to live and reproduce exist.3. Edge effect refers to the presence of rich and unique biological diversity found in an ecotone.Which of the above statements are correct?

Consider the following statements regarding ecology:1. Climax ecosyste

1.	Consider the following statements regarding ecology:1. Climax ecosystem is a stage in the evolution of an ecosystem, at which all the species are in dynamic equilibrium among themselves as also with the environment.2. Ecological niche means all the physical, chemical and biological factors that a species needs in order to live and reproduce exist.3. Edge effect refers to the presence of rich and unique biological diversity found in an ecotone.Which of the above statements are correct?
A.	1, 2 and 3
B.	1 and 2 only
C.	1 and 3 only
D.	2 and 3 only
Answer» B. 1 and 2 only

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Consider the following statements regarding ecology:1. Climax ecosystem is a stage in the evolution of an ecosystem, at which all the species are in dynamic equilibrium among themselves as also with the environment.2. Ecological niche means all the physical, chemical and biological factors that a species needs in order to live and reproduce exist.3. Edge effect refers to the presence of rich and unique biological diversity found in an ecotone.Which of the above statements are correct?
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