Red blood cell. 14. A small amount of chemical M was put on one side of maize coleoptile. After some days, it
was noticed that the coleoptile curved away from the side to which the chemical was applied..
(a)Suggest the possible identity of chemical substance M
(1mrk)
(2mrks)
(b)Explain how this chemical might have caused the coleoptile to curve.

Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years.Steam coal, also known as thermal coal, is used in power stations to generate electricity. Coal is first milled to a fine powder, which increases the surface area and allows it to burn more quickly. ... The hot gases and heat energy produced converts water – in tubes lining the boiler – into steam.The presence of large coal deposits in regions that now have arctic or subarctic climates (such as Alaska and Siberia) is due to climatic changes and to the tectonic motion of crustal plates that moved ancient continental masses over Earth's surface, sometimes through subtropical and even tropical regions.

Explanation: