Snowball earth is when the Earth was covered by ice and snow from pole to pole for long periods of time in the past. The average temperature on the surface was about -50° and at the equator it was about -20°‚ which is roughly the temperature of Antarctica today. This is because the solar radiation from the Sun is reflected back into space due to the icy surface of the Earth. The oceans play a major role on the temperature fluctuation associated with day and night and because the oceans have a layer
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what their species is. The leaf of this plant is an important part of the Koala’s diet. * ‘The Pines’ are tall trees that are native to the northern hemisphere. There are about 90 species. These trees have very rough trunks as well as spiky evergreen leaves. Although they are native to the northern hemisphere‚ many have adapted to the climate here in Australia. * ‘The Araucarias’
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Name: Denise O Yah Wei ID : SCSJ-0010581 Speech Outline Specific Purpose: To persuade people to join Earth Hour. Central Ideas : The purpose of Earth Hour‚ impact of Earth Hour‚ and how to participate in Earth Hour. A. Introduction 1. Earth Hour is the world’s largest sustainability movement‚ held on the last Saturday of every March. By asking people to switch off their lights for an hour‚ it allows individuals across the globe to take a united stand against climate change. And
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How earth is like spaceships Introduction Earth is very similar to a space ship because both are self-contained system with all the necessities to support lifelike a spaceship planet Earth moves through space‚ revolving around the sun at a speed of 108‚000 km/hr planet earth is isolated. A spaceship has a unique life support system providing air‚ water‚ food‚ shelter and companionship. Earth also has its own life support system which includes the atmosphere‚ hydrosphere‚ lithosphere and biosphere
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Camp Mr. David Kelty English 105 3 December 2012 Threats From Space on Earth There are seven possible scenarios which scientists believe if occur‚ could naturally end this planet and humanity‚ the world as we know it. Orbital change‚ rotational change‚ collisions with the Earth‚ the big rip‚ the sun‚ black holes‚ and other systems going out of whack can cause events that could potentially cause an end to life on Earth. People have theorized about an end to the planet or people on it for most
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Ryan Jabola Mr.Montalbano 2nd Period AP Lang. and Comp. 3 November 2014 How to Poison the Earth Questions Questions on Meaning: 1.) The main purpose of this essay is to inform the readers about the threats we are causing to the future of our planet because he explains how humans are poisoning the earth. Humans are poisoning the earth from their use of pesticides‚ ruining water supplies‚ forming radioactive materials‚ and drilling into the Earth’s surface. This idea can clearly be seen throughout the essay
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NOVA “Earth From Space” 1. They describe at least three teleconnections in the film. The movie talks about sandstorms in the Sahara Desert transforming the rainforest across the globe. Also explained are the waterfalls under the sea in Antarctica‚ leading to a feeding frenzy in the ocean by the equator. Finally‚ they talked about streaming water off the coast of Africa causing a disastrous weather storm in the United States. This happens because all of the activity in the ocean‚ sun and atmosphere
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Moon today. The Earth keeps the Moon in orbit by its gravitational pull it sets onto it. The Moon is constantly spinning farther away from the Earth at a rate of approximately 3.78 centimeters per year. When the moon was closer to the planet‚ days were only five hours long‚ now‚ since the moon is slowly spinning away‚ the days get longer‚ meaning that the days are now 24 hours and will continue to slow down. Without the Moon‚ the Earth’s rotation could slow down‚ causing the planet to wobble slightly
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1) Why does the Earth have seasons? Describe the relationship of the Earth and Sun in each of our four seasons. Contrary to what most people believe‚ seasons on Earth are not caused by the distance of our planet in relation to the Sun. This is a common misconception due to the Earth’s elliptical orbit around the Sun‚ which means there are times that the Earth is closer to the Sun‚ and times when it is farther away. If the Earth’s proximity to the Sun was the cause of our seasons‚ then they would
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Question: What is the circumference of the earth? The circumference of the earth was at one time an interesting question and today an important piece of information. It is a question people have been trying to answer as early as 200 BC. Today‚ modern scientists and equipment – such as satellites and other similar devices – tell us the circumference of the earth is 40‚075 kilometers when measured at the equator‚ and though the ancient peoples did not have access to such advanced technology and equipment
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