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The input is chemical energy (in the form of fuel). The outputs areSound (not useful)Kinetic (useful)Heat (may be useful)The efficieny is given by useful output energy divided by total input (or output) e...
The process responsible for gas exchange in animals is diffusion. Air, containing oxygen needed for cellular respiration, is inspired in fills the lungs. The high concentration of oxygen in the lung...
Plot the graphs y=x^2+3 and y=2-4x. The solution(s) are the point(s) of intersection. The graphs can be plotted by making a table of values; this is the best method for the quadratic curve. The straight l...
Saliva contains salivary amylase which digest some carbohydrates in mouth
A paragraph comparatively analysing two pieces of poetry should be based around a feature which the poems share, or by which they might be contrasted. This might be a theme or attitude, or a more technica...
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