Africa is the most tropical of all continents. Climate and vegetation range from equatorial rainforests, tropical deserts and savanna grassland to Mediterranean. The Sahara Desert, the largest of its kind anywhere in the world, is over 10.4 million km2 n North to south is approx.1800 kms and east-west is 5600km.frica is the most tropical of all continents. Climate and vegetation range from equatorial rainforests, tropical deserts and savanna grassland to Mediterranean. The Sahara Desert, the largest of its kind anywhere in the world, is over 10.4 million km2 n North to south is approx. 1800 kms and east-west is 5600km.
Uncontrollable shaking occurs when the muscles relax and contract repeatedly. Most people experience uncontrollable shaking at some time, usually because of fear or excitement, but a number of neurological diseases that destroy nerve tissue can also cause uncontrollable shaking. These include Parkinson's disease and multiple sclerosis.
Most tremors occur in the hands. Drug-induced tremors may cause your head to shake or nod uncontrollably. The tremors may not happen all of the time, but theyâre likely to occur within the first hour of taking medication. If you find that this happens to you, take note of the medications you took before your tremors.