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Explain the process and mechanisms underpinning gas exchange in animal bodies.

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...

Answered by Eoin B. • Biology tutor

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By plotting appropriate graphs, find x to the nearest integer if x^2+3=2-4x.

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...

Answered by Samuel H. • Maths tutor

2695 Views

Explain the formation of a destructive and constructive plate boundary, and describe where they are around the world.

A Destructive plate boundary is when the oceanic and continental plates move together. The oceanic plate is forced under the lighter continental plate. Friction causes melting of the oceanic plate which m...

Answered by Krishna M. • Geography tutor

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let line L have the equation 4y -3x =10, and line M passes through the points (5,-1) and (-1,8), find out if they are perpendicular, parallel, or neither

L:4y=3x+10 -> y=3/4 x + 10/3. M: y= mx+ c such that it passes through the points in question, then m=(-1-8)/(5-(-1))=-3/2. As the gradient of L is not a negative reciprocal of the gradient of M, nor is...

Answered by Illya N. • Maths tutor

4037 Views