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2. The diagram below shows part of a woodland food web.
Foxes
ument
Stoats
Weasels
Mice
Ladybirds
Woodlice
Greenflies
Oak tree leaves
Leaf litter
(a) Name the producer in this food web.
(1)

The friction red blood cells encounter when moving past each other. cardiac output: the amount of friction blood encounters during flow through blood vessels. blood pressure: the force of the blood against the vessel wall. blood viscosity: the volume of blood pumped out by one ventricle each minute.

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.

How do living things obtain phosphorus