Tutor profile: Hilary B.
Subject: Natural Sciences
What is a food chain? Explain how the energy in all food chains come from the sun.
First, let's define ecosystem. An ecosystem is all the living and non living things in one particular area. Non-living things include rocks, dirt, air and water. Living things include animals and plants. Some animals eat other animals, we call those carnivores. Animals that eat plants are called herbivores. Animals have to eat something else to get energy. Plants, on the other hand can make their own food from sunlight and water. Plants also take in nutrients from the soil, but it is not necessary. They only really need sunlight and water to make their own food through the process of photosynthesis. Sunlight - Grass - Rabbit - Wolf This is a food chain. This diagram shows how energy travels from the sun to the grass. The Rabbit eats the grass and then the wolf eats the rabbit. The energy fro the sun travels through the the ecosystem in the plants and animals as they eat and are eaten.
Subject: World Geography
How did ancient people choose where they would build their villages or cities? What things were important for their daily lives?
Many ancient peoples settled near rivers. There were several reasons why these locations might have been preferable: 1. Water was easily available for drinking, hygiene and agriculture 2. Land near rivers is frequently fertile and supports agriculture well. 3. Rivers acted as early highway systems assisting ancient peoples in their trade and transportation. Some example of this from around the world are- 1. Africa- Ancient Egypt- Nile River. 2. Middle East- Mesopotamia- Tigris and Euphrates Rivers 3. China- Huanghe - Yellow River 4. North America- Caddo- Mississippi River 5. India- Harappan- Indus River
Subject: World History
What was the Space race? Which countries were involved? What were notable events in the space race and which country won?
The Space Race was a term to describe the cold war era competition to launch unmanned and later manned space crafts into space. During this era there was a great deal of competition and distrust between the United States and the Soviet Union. Both governments kept close tabs on the actions, both the successes and failures of the other and often taunted each other in the media. The USSR was first to launch an unmanned craft- Sputnik I. The USSR also was first to launch a craft carrying a live creature- Sputnik II. Finally the USSR was first to send a man into space- Yuri Gargarin. The USSR won the Space Race. The first satellite launched into space was Sputnik I, launched by the USSR on the 4th of October of 1957. About a month later, on November 3rd, Sputnik II was launched carrying a dog named Laika, who unfortunately did not survive. The USA attempted to launch a satellite on December 6th 1957 named Vanguard but it was not successful. On January 13, 1958 the USA launched Explorer I. On April 12th 1961 the USSR sent a man into space. His name was Yuri Gagarin. Less than one month later, on May 5th the USA sent Alan Shepard.
needs and Hilary will reply soon.