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Originally there was only one species of finch (bird) in the Galapagos Islands. However there are now 14 different species of finch in the Galapagos Islands. Suggest an explanation for the development of the 14 different species.

The populations of finches became separated geographically (on different islands). Then genetic variation developed in these isolated communities. Natural selection acted differently in these isolated commun...
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Answered by Francesca N. • Biology tutor
4322 Views

How do you factorize a quadratic equation which has a coefficient of x^2 other than 1?

Factorise 6x 2 + x - 2 = 0 Firstly, multiply the coefficient of x 2 by the last number: 6 x -2 = -12 List all the factors of 12 and see which pair adds/subtracts to make 1: Factors of 12: [1,12] [2,6] [3,4] ...
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Answered by Aleezeh A. • Maths tutor
3397 Views

Describe the difference between the function of a receptor and the function of an effector.

receptors detect a changes in the enviroment and effectors allow a response to be made. an example of this would be the jerk reflex when accidentally touching something thats hot. temperature receptors in th...
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Answered by Anthony D. • Biology tutor
3516 Views

Kenny has £3200 in a savings account. After a year, the bank pays him interest increasing his balance to £3360. What percentage rate was applied to the account?

Kenny originally had £3200 After a year, he had £3360 £3360 - £3200 = £160 160/3200 = 0.05 0.05 x 100 = 5% Therefore, a 5% interest rate was applied to Kenny's account
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Answered by Megan C. • Maths tutor
6319 Views

Describe the Multi-Store Model of Memory (Atkinson & Shiffrin, 1968)

The Multi-Store Model of Memory proposes that there are 3 parts of the memory system: Sensory Register (SM) – environmental stimulus from your senses causes information to come in to the sensory register, as...
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Answered by Megan C. • Psychology tutor
9192 Views