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Describe how an endotherm prevents its body temperature from rising when external temperatures increase?

An endotherm detects external temprature increases through peripheral skin receptors just beneath the skins surface. This causes impulses (action potentials) to travel to the thermoregulatory centre in the H...
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Answered by Jack O. • Biology tutor
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What are important points to consider when being asked to analyse the usefulness of a primary source?

In order to answer a primary source there are 4 main points of focus in order to ascertain how useful the source is: Who - did the author (if it were a written artefact) have a particular reason for reacting...
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Answered by Alice K. • History tutor
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Explain how the structure of an artery is related to its' function.

The artery is composed of elastic fibres which allow the artery walls to stretch following ventricular systole, so that the artery is able to maintain the high pressure.The artery has a smooth endothelial li...
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Answered by Brooke H. • Biology tutor
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What are the key features of parasites?

Parasitic organisms (or parasites) refer to living things which sustain themselves, obtaining nutrients and other resources, at the expense of another organism that they live on or within, known as the host,...
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Answered by Ryan B. • Biology tutor
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Write 40 as product of prime factors

Prime numbers are those that only have two factors, the number itself and 1. The two factors cannot be the same. E.g. 2 is a prime number but 1 is not.A prime factor is when a prime number is a factor of ano...
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Answered by Maariya A. • Maths tutor
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