Write short notes on the following disesases:
AIDS.
Write short notes on the following disesases:
AIDS.
AIDS: AIDS stands for Acquired Immuno Deficiency Syndrome. It is a fatal disease. The disease of AIDS is caused by retrovirus (a RNA virus) known as Human Immunodeficiency Virus (HIV). AIDS virus attacks white blood cells (WBCs) or lymphocytes of human beings and weakens the human body’s immunity or self-defence mechanism.
Some important symptoms of AIDS are: Swollen lymph nodes, regular fever, sweating at night and weight loss. Its virus also cause severe damage to brain and may lead to loss of memory, ability to speak and of clear thinking.
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A body of mass 2kg is thrown vertically upwards with an initial velocity of 20m/s. What will be its potential energy at the end of 2s? (Assume g = 10m/s2).
The speed-time graph of an ascending passenger lift is given alongside.
What is the acceleration of the lift:

When is the pressure on the ground more-when a man is walking or when a man is standing? Explain.
What all treatments grains are subjected to under prophylactic treatment?
Explain the objectives of mixed cropping. How are crops selected for mixed cropping.
Write down four main characters of angiosperms.