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Explain the process of human digestion from the mouth to the stomach.

Food enters the mouth and is digested mechanically and chemically. Mechanical digestion is chewing (mastication) by the teeth and breaks the food into smaller pieces. Chemical digestion is by salivary amylas...
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Answered by Akash K. • Biology tutor
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There are 2 green jelly beans, 5 are yellow and 13 are red. Sue picks one jelly bean. What is the possibility that sue pick a jelly bean that is not yellow?

Answer: 3/4 2 green and 13 red therefore 15 of the 20 is not yellow simplifying this probability gives you 3/4.
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Answered by Ann P. • Maths tutor
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Describe the structure of metal and its bonding and how its structure contribute to its properties.

Metals have a distinct bonding known as metallic bonds, where there is a sea of delocalised electrons and metal ions present. This is due to electrons leaving the atom forming a positive metal ion and a sea ...
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Answered by Ann P. • Chemistry tutor
8890 Views

Expand and and simplify (x^2 + 7) (x - 1)

Firstly, it is important to understand here that "expand" means multiply the two brackets. A logical approach can be taken to this question. Deal with the first term (x^2) of the first bracket: mul...
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Answered by Sherin T. • Maths tutor
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Why is the demand curve downwards sloping?

The demand curve slopes downwards due to the idea of diminishing marginal utility. This is the idea that the consumer receives less additional utility for each extra unit of the good consumed.The substitutio...
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Answered by Joanna B. • Economics tutor
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