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CBSE Class 12-science Answered

What is hydrologic cycle?
Asked by ashutosh25807 | 17 Jan, 2018, 10:24: AM
answered-by-expert Expert Answer

The hydrologic cycle, also known as global water cycle or the H2O cycle, describes the storage and movement of water between the biosphere, atmosphere, lithosphere, and the hydrosphere.

Answered by Sheetal Kolte | 17 Jan, 2018, 12:36: PM

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CBSE 12-science - Biology
what is adaptive radiation? does it refer to  power of adaptation in an individual to a variety of environments or evoluion of species from a common ancestor or adaptations due to geographical isolations?
Asked by imtiyazmulla68 | 30 Mar, 2018, 09:34: PM
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CBSE 12-science - Biology
Mention the role of pioneer species in primary succession on rocks. 
Asked by Topperlearning User | 19 Sep, 2016, 06:06: AM
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CBSE 12-science - Biology
The climax stage is achieved quickly in secondary succession as compared to primary succession. Why?
Asked by Topperlearning User | 19 Sep, 2016, 06:07: AM
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CBSE 12-science - Biology
Mention one similarity between hydrarch and xerarch successions.
Asked by Topperlearning User | 13 Jun, 2014, 04:48: PM
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CBSE 12-science - Biology
What are seral communities?
Asked by Topperlearning User | 13 Jun, 2014, 04:48: PM
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CBSE 12-science - Biology
Why nutrient cycles in nature are called biogeochemical cycles?
Asked by Topperlearning User | 19 Sep, 2016, 06:06: AM
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CBSE 12-science - Biology
The gradual and predictable change in the species composition of a given area is called ecological succession. What do you understand with the pioneer and climax communities in this context? 
Asked by Topperlearning User | 19 Sep, 2016, 06:06: AM
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CBSE 12-science - Biology
Name the pioneer and the climax species in a water body. Mention the changes observed in the biomass and biodiversity of the successive seral communities developing in the water body.  
Asked by Topperlearning User | 13 Jun, 2014, 04:48: PM
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CBSE 12-science - Biology
Why is secondary succession faster than primary succession?
Asked by Topperlearning User | 13 Jun, 2014, 04:48: PM
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CBSE 12-science - Biology
Explain the function of ‘reservoir’ in a nutrient cycle. List the two types of nutrient cycles in nature.
Asked by Topperlearning User | 13 Jun, 2014, 04:48: PM
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