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Science 1st post
Tuesday, July 27, 2010
Our intial theory : Photosynthesis makes food for plants, so that they can respire. Respiration breaks down food into energy which is used in photosynthesis. Phtotsynthesis and respiration works together to ensure there is a balance between oxygen and carbon dioxide in the air.

A better theory : Photosynthesis provides the plant with the neccessary energy used in respiration.

Q: Why study photosynthesis?
A: Photosynthesis provides oxygen, so it os an essantial item towards playing a major role in making sure the Earth is not affectedby thr greenhouse effect.

Q: What is the importance of photosynthesis?
A: It is to control the amount of gases tht are in the air. Photosynthesis is the process of producing oxygen in the air. It also takes in carbon dioxide. So there will not be unequal number of carbon dioxide and oxygen in the air. (: Because our quality of life, and indeed our very existence, depends on photosynthesis.

Q: How will photosynthesis affect us?
A: Photosynthesis
is the process which oxygen is produced. It is essential for us as it helps to keep us alive. If there is no photosynthesis, plants will die, when that happens, the whole food chain will be disrupted. We would eventually die because there is not enough oxygen and food for us to take in.
Q: What would happen if there were no photosynthesis?
A: If there was no photosynthesis, no more oxygen would be would be produce by trees which would lead in the increase in the temperature of Earth which is global warming. If the temperature of the Earth increases, the sea level would rise. There would be also no more food for us as plants produce glucose through photosynthesis.

Q: Photosynthesis important for plants only?
A: Photosynthesis is a process that convert carbon dioxide to sugars, oxygen and other organic compound by using energy by the sunlight. Photosynthesis is important for plant as it was use to make food for the plant and produce oxygen for plants.Photosynthesis is also use to produce oxygen for other living things and the plant in the plant is food for the herbivores and the omnivores which would be eaten by carnivores or omnivores.

Q: A Plant needs its own food to function. It can't really make its own food at night. Beyond a few hours of darkness, can a plant stay alive without light?
A: Yes. The plant uses its stored starch and change it to glucose to use it for respiration in the plants.


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