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Describe and explain how a tiger with striped fur may have evolved from a non-striped ancestor

Natural selection: Mutations (e.g. of pigment gene, and of regulatory genes) creating variability between members of the same species. Selection pressure of prey availability - Selection pressures are ext...

RD
Answered by Ruchi D. Biology tutor
10366 Views

When to use “depuis” and when to use “il y a” with time expressions

1.    Depuis I.        If you want to say you have done something since a certain point in time, you use depuis with the present tense. o  Je travaille comme professeur depuis 2017 >> I’ve worked as...

FH
Answered by Faye H. French tutor
1720 Views

How would you deal with the stress of medical school

For this question you need examples-- a time when you had a lot on and how you coped. You should talk about how you would organise your tasks- such as by making a list and prioritising what you have to do...

HC
1352 Views

Find the gradient at the point (0, ln 2) on the curve with equation e^2y = 5 − e^−x . [4]

Figure out what skills are being tested: implicit differentiation and exponentials and logarithms.e2y = 5 - e-x2e2y(dy/dx) = e-x(dy/dx) = e-x/ 2e

TC
Answered by Theodore C. Maths tutor
3810 Views

Calculate the resistance of a uniform wire of diameter 0.5mm, length 2m and resistivity 1.7x10^-8Ωm.

R=ρ L/AR= (1.7*10^-8 2)/(0.0005^2π/4)R=0.173Ω

HW
Answered by Heather W. Physics tutor
2036 Views

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