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Biology
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Explain how the intensive rearing of domestic livestock increases net productivity

Productive animals are selectively bred to ensure the next offspring will be equally, if not more productive. These young animals are kept inside in warm conditions to limit energy loss due to maintaining...

JA
Answered by James A. Biology tutor
11833 Views

Nitrate from fertiliser applied to crops may enter ponds and lakes. Explain how nitrate may cause the death of fish in fresh water.

The applied nitrates may seep into water sources from the fields at times of rainfall. Here, they increase the nitrate concentration in the water, leading to an algal bloom. This layer of surface algae bl...

JA
Answered by James A. Biology tutor
15481 Views

Describe the process of allopatric speciation. How does this differ from sympatric speciation?

Basic level answer

Description of some form of geographical separation leading to isolated populations

Referencing reduced interbreeding and the development of differences b...

JK
Answered by James K. Biology tutor
4291 Views

Name a product of photosynthesis?

Glucose

Oxygen

OE
2467 Views

Describe the function of white blood cells

They defend the body against diseases by producing antibodies

NM
Answered by Nimshi M. Biology tutor
3655 Views

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