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What evidence is there for evolution?

For IB Biology, there are three types of evidence for evolution you need to know: fossils, selective breeding and homologous structures. Fossils are preserved remains or traces of organisms from the past – t...
EF
Answered by Emma F. • Biology tutor
11211 Views

y = (x^3)/3 - 4x^2 + 12x find the stationary points of the curve and determine their nature.

first we find the first derivative of the function. Here dy/dx = x^2-8x+12. We set this to zero and factorise to obtain the roots of the function. Such that dy/dx = (x-6)(x-2)= 0. This gives the stationary p...
JM
Answered by Jordan M. • Maths tutor
5267 Views

How is a gorge of recession formed? (6 marks)

Exam Answer: The waterfall flows over resistant hard/cap rock. A deep plunge pool is formed at the base of the waterfall due to erosion. The hard rock above is undercut by erosion of the underlying soft rock...
RC
Answered by Rosanna C. • Geography tutor
16918 Views

describe how the plant hormone auxin and light affects the direction of growth of plants

The hormone auxin causes cells in shoots to grow faster, and cells in roots to grow more slowly. Auxin becomes more concentrated on the side of the plant that is not facing the light, the shaded side. In the...
ND
Answered by Niamh D. • Biology tutor
19286 Views

"Demain je ... à manger" replace with the futur of "faire"

Je ferai à manger. There is no "s" at the end of the futur at the 1st person. And you don't write "fairai" but "ferai". This verbe is quite special, and you need to know how to ...
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Answered by Laure N. • French tutor
2537 Views