Watch the TV programme from 20.37–24.06 and reread LoM pp. 247–248 and 255. Write a paragraph of about 120 words explaining why the inability to detect the colour red would disadvantage anthropoid primates. Try also to in
4 Who were the ancestors of Homo?
Fossil evidence supports Darwin's view that humans and apes evolved from an ape-like ancestor and, furthermore, suggests that the ape line diverged from the Homo line at least five million years ago (Figure 1). From our current knowledge of the fossils available to us, the evolutionary tree in
By the end of this unit you should be able to:
describe the particular problems in digesting plant material;
give examples of the ways in which teeth are modified for a herbivorous diet;
explain the importance of digestive enzymes;
explain the importance of microbes in digesting plant material;
compare the main features of the digestive systems of ruminants and hindgut fermenters;
describe some of the way
Sixty-five million years ago, animal and plant life were very different from nowadays, but there were rat-sized placental mammals living successfully on the ground. They were insect eaters, i.e. insectivores, feeding on the vast numbers of insects and other invertebrates living in soil, leaf litter and low-lying vegetation. Insectivore means ‘insect eater’, and in this unit we will explore the world of insect-eating mammals, classified together on the basis of a reasonably close evolution
3.4 Penetration depth
The characteristic length, λ, associated with the decay of the magnetic field at the surface of a superconductor is known as the penetration depth, and it depends on the number density ns of superconducting electrons.
We can estimate a value for λ by assuming that all of the free electrons are superconducting. If we set ns = 1029 m−3, a typical free electron density in a metal, then we find that
1.9.1 Moving around the rock cycle
One way of illustrating the possible ways of moving material around the rock cycle is to draw a diagram that places the processes into their geological contexts. Since the rock cycle involves processes occurring on the Earth's surface and also within its interior, we use a cross-section through the Earth's crust and uppermost mantle to do this, as shown in Author(s):
1.8.2 Interpretation of a geological exposure
We now want to make use of the observations obtained by sketching the exposure, and it is useful to start by briefly summarising the features seen. First of all, you probably noticed the large boulder in the foreground of Figure 16 (which has been attached below for ease of access). Where did this boul
1: Gravitational force
The gravitational force of attraction exists between objects. This force is the reason you feel yourself pulled towards the Earth.
How does the magnitude of the gravitational force between two objects change when the ma
6.3 The principle of direct effect
Does the principle of supremacy of EU law mean that the ECJ is the only court in charge of applying and enforcing EU law? The answer to this question is ‘no’, which is the consequence of the principle of direct effect. Certain provisions of EU law may confer rights or impose obligations on individuals that national courts are bound to recognise and enforce. This means that the national courts must apply the directly applicable EU rules and must do so in priority over any conflicting provi
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