air=oxygen-human to breath
= corbondioxide for plants
water= human to drink
= plants to survive
sunlight = mainly resourceful for plants cuz with sunlight they process food (photosynthesis) so with sunlight, carbondioxide and water plants does its foods that is photosythesis
as for human we need sunlight as source of vitamin D
so its water, air and sunlight
2006-12-10 13:35:44
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answer #1
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answered by L_n_C_fReAk 3
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The earth's temperature is just perfect for life. If it were 5% claoser or further from the Sun then life could not exist here. The proper percentage of oxygen is essential for life on earth to exist here. If our earth did not have an adequate supply of plant-life then we would be oxygen-deficient and could not survive. The life cycle is essential for a stable environment here. When an animal dies it decays as a result of bacteria and other organisms that feed off of it. The decaying body becomes nutrient-matter for the plant life here. The plant life here is eaten by some insects and animals that are eaten by other animals. GOD has set everything in motion so that we are able to survive inthis world. HE is our Creator. Have a GrEaT HoLiDaY!!
Eds
2006-12-10 21:38:04
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answer #2
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answered by Eds 7
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Water, Oxygen, Climate
2006-12-10 21:55:11
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answer #3
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answered by sunchips1506 1
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One gravity- Every planetary body, including the Earth, is surrounded by its own gravitational field, which exerts an attractive force on any object. This field is proportional to the body's mass and varies inversely with the square of distance from the body. The gravitational field is numerically equal to the acceleration of objects under its influence, and its value at the Earth's surface, denoted g, is approximately 9.807 m/s² or 32.17 ft/s². This means that, ignoring air resistance, an object falling freely near the earth's surface increases in speed by 9.807 m/s (around 32 mph) for each second of its descent. Thus, an object starting from rest will attain a speed of 9.807 m/s (32.17 ft/s) after one second, 19.614 m/s (64.34 ft/s) after two seconds, and so on. According to Newton's 3rd Law, the Earth itself experiences an equal and opposite force to that acting on the falling object, meaning that the Earth also accelerates towards the object. However, because the mass of the Earth is huge, the measurable acceleration of the Earth by this same force is negligible, when measured relative to the system's center of mass.
Two Ozone- The highest levels of ozone in the atmosphere are in the stratosphere, in a region also known as the ozone layer between about 10 km and 50 km above the surface. Here it filters out the shorter wavelengths (less than 320 nm) of ultraviolet light (270 to 400 nm) from the Sun that would be harmful to most forms of life in large doses. These same wavelengths are also responsible for the production of vitamin D, which is essential for human health. Ozone in the stratosphere is mostly produced from ultraviolet rays reacting with oxygen:
Three- Water is an odourless substance that is essential to all known forms of life and is known as the universal solvent. It appears colorless to the naked eye in small quantities. It covers nearly 70% of Earth's surface. The UN Environment Program estimates there are 1.4 billion cubic kilometres (330 million mi3)[1]of it available on Earth, and it exists in many forms. It appears mostly in the oceans (saltwater) and polar ice caps, but it is also present as clouds, rain water, rivers, freshwater aquifers, lakes, and sea ice. Water in these bodies perpetually moves through a cycle of evaporation, precipitation, and runoff to the sea. Clean water is essential to human life. In many parts of the world, it is in short supply. Significant quantities exist on the moons Europa and Enceladus. Thales of Miletus, an early Greek philosopher, known for his analysis of the scope and nature of the term "landscaping", believed that "all is water."
2006-12-10 22:14:55
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answer #4
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answered by Jnsp52 2
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Flora (plants and vegetation)
Fauna ( Animals)
Water (Hydation)
All of these elements need each other and the Sun to survive. Flora fauna and water all supply sustanance for man and other creatures.
Sun and Water as well as earth provide sustance for the vegetation and Animals fertilize the earth.
2006-12-10 21:30:21
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answer #5
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answered by fancyname 6
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Why is possible for things to live on Earth? This about why there is no life on other planets.... Maybe start with the atmosphere we have that protects us. I hope that got the wheels rollin.
2006-12-10 21:28:31
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answer #6
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answered by Amy B 2
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Think about climate, water, atmosphere, and food supply and you should be able to answer your question.
2006-12-10 21:28:26
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answer #7
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answered by Anonymous
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atmosphere, water, sunlight, natural resources
2006-12-10 21:28:03
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answer #8
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answered by Anonymous
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the atmosphere , water, sunlight.
2006-12-10 21:27:26
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answer #9
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answered by GC 3
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oxygen, water, and light
2006-12-10 21:33:51
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answer #10
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answered by noey2010 2
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