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Ap bio chapter 10: photosynthesis
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Introduction:
Energy is a kind of quantitative properties that exist in the earth describing ecosystem or object state. Energy can be transformed among a number of forms that may each manifest and be measurable in differing ways (Wikipedia2013). Energy existed in the ecosystem with different form. Meanwhile, it does not cycle through ecosystems but instead enters ecosystems and is used up within ecosystems (InstaEDU 2013). Also, energy flow is the process by which energy moves throughout an ecosystem and energy existed in difference energy flows in ecosystem such as biological, chemical and physical. The purpose of this essay is to describe and explain different energy flows in our daily life and how these energy flows vital to human.
Main paragraph:
Ecosystems maintain themselves by cycling energy and energy flow begins with the sun. Organisms known as producers which were plants used sun light to create their own energy. This energy production is called photosynthesis. Plant converted solar energy into chemical energy which is starch by leaves and transport to different organ in the plant to support their growth.
In turn, other organisms eat plants for energy. These organisms are animals called primary consumers. When a primary consumer for example a cow eats a plant, the energy is transferred from plant to animal, just like it was transferred from sun to plant. Then, organisms that feed at several trophic levels are classified at the highest of the trophic levels at which they feed and this organism is called human.
The energy flow in the food chain can be concluded as solar energy converted to chemical energy to heat energy and finally heat lost at one trophic level to the next trophic level. On average about 10 per cent o...
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... at times when demand is high and a heavy load is placed on the system. Beside pumped storage, the most common generator to produced hydroelectricity is a hydroelectric dam, the turbine inside can converted the kinetic energy of falling water or flowing water into electricity and the electricity transfer to the nearly city by electrical wire for the supply of human activities.
Conclusion:
For the conclusion, human cannot live without energy. In daily life, we need to feed on the food to intake energy for body homeostasis. Also, we are using electrical energy every moment. Business, science research, agriculture, entertainment, even the device in our home for example light bulb, mobile phone, television or fridge, everything needed electricity to support. We are living with different kind of energy flow and we need them all the life as it is vital to our daily life.
All living things fall into two main categories based on how they obtain chemical energy. There are autotrophs and heterotrophs. Autotrophs are “an organism that uses energy from an external source, such as sunlight, to produce its own food without having to eat other organisms or their remains (page g14).” Within the food web, autotrophs are identified as producers because they convert the energy from sun into the energy they need through photosynthesis and are plants, algae and even some bacteria. In contrast, heterotrophs are “an organism that obtains its energy by eating other organisms or their remains (page g4).” Consumers include herbivores, carnivores, and decomposers. While autotroph are recognized by many in the
The use of turbines from dams to provide power was a brilliant idea until water levels started running lower than normal. The water waste from humanity is directly contributing to portions of it, aside from drought conditions affected by pollution, widespread fires battled, and more adds to the depletion thereof. When humanity is relying on power provided from dams to handle the demand, they are essentially relying on the assumption that water levels will always be there to provide it. The Hoover Dam provides power to the southwestern portion of the USA that has a large number of people.
...heir energy get stored in the soil and used again in the cycle. For example: the red oat grass is consumed by the Thomson gazelle, the Thomson gazelle is then attacked and consumed by the cheetah, the cheetah is consumed by the lion, the lion once dead is consumed by the vultures and the land scavengers, and they are consumed by the decomposers.
Next, hydro-electricity is electricity produced by moving water, flowing past a turbine connected to a generator (“Hydropower”). According to Nationalgeographic.c...
Hydroelectric energy is the best possible energy source because it has the least problems and the most success and efficiency. I would fuel my entire city with hydroelectric energy.
This pictures demonstration the level of food chain in the ecosystem. The bottom level is the producer and the higher level will be the predator.
Autotrophs, such as plants, algae and cyanobacteria, use either photosynthesis or chemosynthesis to produce energy. Most well known organisms of these autotrophs are plants, and they are known as photoautotrophs because they synthesize their own food and energy using the light energy from the Sun. In plants, proteins called photosynthetic reaction centers contain green chlorophyll that absorbs light energy. These proteins are held inside organelles called chloroplasts, which are abundant in leaf cells.
How exactly does hydropower work, though? As it turns out, dams are the main source of harvesting energy via hydropower. There are about 80,000 dams in the United States, although not all are active producers of power. There are four main types of hydropower facilities, which all require turbines: impoundment, diversion, run-of-river, and pumped storage. Also, there are two main types of hydro turbines: impulse turbines and reaction turbines ("Hydropower…”).
Photosynthesis is a key contributor to all living things; photosynthesis provides the oxygen, food, and nutrients that help all living things stay healthy and alive. Photosynthesis converts solar energy into the chemical energy of a carbohydrate. Photosynthetic organisms, including land plants, algae, and cyanobacteria, which are called autotroph...
Over the past decades, geologists and scientists alike have determined that the Earth is running out of non-renewable resources, particularly those resources that provide us with energy that fuels our world’s economies, jobs, and most importantly our daily lives. Without this energy, whole countries can collapse, and the human race would struggle to survive. Therefore, it is safe to assume that we as a nation are entirely dependent on energy, or the ability to do work (Gale Science in Context). Consequently, we are now actively searching for more cost efficient and useful forms of energy to replace those we currently use. By doing this we will be helping the earth by reducing carbon emissions and cutting down on air and water pollutants. This may ultimately prolong the life of our planet, and save money and resources while doing so.
Solar energy is clean energy that does not affect our environment. Solar power utilizes the sun’s energy to produce electricity, unlike other sources of energy, which rely on continual mining for raw materials. Consequently, producing solar energy from the heat from the sun does not result into the annihilation of the ecosystem, compared to the extraction of fossil fuels (Bode, 2005). Therefore, with the use of solar energy, it will help keep the environment clean, thus help to combat the issue of global warming, which is a threat to the world’s ecosystem worldwide. The use of solar energy will help save the worlds vegetation, and help prev...
Hydroelectricity is a known renewable energy resource that provides substantial benefits for our wealth, our health, and for our global economy. There are five types of renewable energy we can use on a daily basis throughout our lives, but the most widely installed form of renewable energy is hydroelectricity. Hydroelectricity is electricity created by converting the kinetic energy of flowing water. Best thing about this source of energy is that it’s timeless and renewable, which means it will never run out, however we had to figure ways to store this energy. In order for them to harness this energy for other people, they had to build generators that convert all the potential energy of rapid moving water into electrical energy. (http://www.ems.psu.edu/~elsworth/courses/cause2003/finalprojects/vikingpaper.pdf)
According to historical records, human beings have taken advantage of the energy of wind for thousands years. Dating back to 5000 B.C., wind was...
Imagine a life without lights, televisions, computers, trains, washing machine, refrigerators and microwaves. Imagine a planet so polluted that smog is in the air so bad that one cannot see very far, lakes and streams are poisoned, and land so badly scarred from people trying to find more energy sources. This may become reality in nearly future as a result of abuse of our energy resources. That reveals that energy is most important in our life, while a planet where we live is important too, a planet which effected by both generate the energy to meet our demands, and our use of energy.
Hydroelectric Power Plant is when electricity is generated when water in an uphill reservoir flows downhill. The gravitational potential energy of the water changes to kinetic energy of the flowing water which drives the turbines to generate electricity. The efficiency is more than 90%. The environmental impact is Floods large area and affects the ecology of the area, May cause drought downstream if not managed properly, does not cause ai...