construct the pair of tangents to a circle of radius 5.4 cm from an external point which is 9 CM away from the centre of circle

What is the amount of organic matter in all living organisms in a habitat called?

Which statement about factories in the industrial revolution is not true? a) some of the first advances were in textile mills b) spinning machines used water power c) water power was replaced by steam power d) coal was imported to english factories for power answer d) coal was imported to english factories for power

Can you give an explanation of what medc and ledc are.