Yellow river (china)
Indus river (India)
Tigris river (<span>Mesopotamia)
Nile river ( Egypt)</span>
A reflex is a natural movement brought on by a particular stimulus.
<h3>What is stimulus?</h3>
A stimulus in physiology is a perceptible alteration in the physical or chemical composition of an organism's internal or external environment. Sensitivity refers to an organism's or organ's capacity to recognize external stimuli and respond appropriately (excitability). As with touch receptors in the skin or light receptors in the eyes, sensory receptors can pick up information from both within and outside the body. Chemoreceptors and mechanoreceptors are examples of internal sensory receptors. A stimulus can trigger a response via stimulus transduction when it is recognized by a sensory receptor. The first element of a homeostatic control system is frequently an internal stimulus.
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Answer:
Environment denotes the sum total pf physical and biological factors that affect the survival, growth, development and reproduction of an organ ism. Population, environment, and development are interrelated to each other. Environment affects the life of living organ isms and socio-economic development process.
Explanation:
Democracy, Africa ruled by Africans, end of segregation and racism, improving the economy and using the resources instead of being used by others etc.
Explanation:
Nelson Mandela is a famous historic figure from South Africa. He is best known for leading a movement for ending the apartheid in South Africa and promoting rights for the black people of this country. Also, Mandela was elected as the first black president of South Africa.
The ideals and beliefs of Nelson Mandela were that there should be no segregation and racism in South Africa. Everyone should have the same opportunities in life. Africans need to rule the African countries, not the white people. There should be democracy established. The resources with which South Africa is rich should be used by South Africa only, not to be exploited by other countries.
While all of these ideas seem to be good in general, in practice it didn't really had any particular positive effect. South Africa has been ruled by Africans for around three decades now. The conditions in the country have not improved. There's no real democracy. The racism is widespread, just that now the cards have reversed and it is the black population that terrorized the white population. The economy is similar situation and is everything but prosperous and powerful one.
<span>The House of Representatives is reapportioned every ten years following each national census.</span>
