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Why do insects and other animals need developed transport systems?

They have a high metabolic rate As a result, they have a high oxygen and glucose demand Diffusion is not efficient alone as it is too far
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Answered by Freya B. • Biology tutor
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(AS Art and Architecture) - What is the significance of the Kritios Boy as a transition piece between Kouroi and Bronze Sculpting.

The Kritios Boy is important as it represented all the fundamental flaws presented with the 'Kouros type' sculpture. For example, the Kritios Boy is attempting to breach realism and does this through a sligh...
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Describe the sequence of events of the clotting cascade that will lead to a blood clot in a damaged blood vessel

Thromboplastin is released from damaged tissue and platelets, which activates an enzyme that catalyses the conversation of the protein prothrombin to thrombin. This occurs in the presence of Calcium and Vita...
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Answered by Laura T. • Biology tutor
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What does it mean for an argument to be valid?

An argument is valid if and only if the following is impossible: all of the premises are true and the conclusion is false. E.g. the argument below is valid:(1) All men are mortal(2) Socrates is a man(3) So, ...
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Answered by Oliver H. • Philosophy tutor
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Find the turning points of the curve (x^3)/3 + x^2 -8x + 5

Step one, we need to assess what the question is asking us to do, in this case, find the turning points.The turning points on the graph are where the gradient is equal to zero, so in order to find the turnin...
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Answered by Ellie M. • Maths tutor
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