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Explain the process of eutrophication.

Leaching from the excessive use of fertilisers causes a nutrient build up in neighbouring rivers or lakes. As a result of the increased nutrients plants within the lake or river grow rapidly, including algae...
EC
Answered by Ellen C. • Biology tutor
27850 Views

What are the main parts of the digestive system, and how are they involved in digestion?

The main parts of the digestive system are the... - mouth - oesophagus - stomach - liver - gall bladder - pancreas - small intestine - large intestine There are three main enzymes involved in digestion: Amyl...
HD
Answered by Heather D. • Biology tutor
16386 Views

What factors contribute to phenotypic variation between organisms?

Let us first understand what is meant by the term "phenotypic variation". Simply, the phenotype of an organism is its observable characteristics - like how it looks, how it behaves, and so on. Diff...
FM
Answered by Faheem M. • Biology tutor
16948 Views

How is oxygen moved from the lungs to the blood?

When oxygen reaches the alveoli of the lunngs, it diffuses into the blood. The oxygen enters the red blood cells and combines with the haemoglobin to form oxyhaemoglobin. When the red blood cells reach the t...
OA
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Why is it important to regulate body temperature? What is the role of our skin in regulating our body temperature?

Our skin is responsible for ensuring that, when our surroundings get too hot, our body temperature doesn't spike up to unhealthy levels. Likewise, when our surroundings get too cold, our skin plays a role in...
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Answered by Kartika A. • Biology tutor
84698 Views