EnergyTransfer.docx - 1 Photosynthesis in the Earth's...

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1. Photosynthesis in the Earth's forests produces about half of the oxygen in the atmosphere. Photosynthesis in the Earth's oceans produces the other half of the oxygen in the atmosphere. Why do you think so much photosynthesis occurs in the oceans? (2 points) The algae photosynthesize in the ocean. There is a lot of algae. 2. The rain forests of South America are very active photosynthetic zones. Although plants around the world use photosynthesis, these areas are more productive than other parts of the planet. a) About half of the forests that covered the Earth in the early 1900s have been cut down. Discuss the impact this has on carbon dioxide levels in the atmosphere. Support your answer. (2 points) It has made the levels of CO2 increase (support -->) due to lack of photosynthesis by the destroyed plant life.
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b. Why might rain forests in South America and near the equator be so productive? List two reasons. (2 points) They have had less disforestation, as well as being denser (the rain forests) and more verdant than in other regions. It is also known that towards the equator the greater temperatures increase the vitality and number of the plants that can grow there. In general, you will find more lifeforms in the warm than in the cold, the same goes for plant-life. 3. Where near your home do you think the highest level of photosynthesis is happening? (1 point) Where the highest amount of vegetation is located. Especially vegetation that has access to a reliable supply of sunlight.
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4. a) Why is photosynthesis so important to life on Earth? (1 point) It acts as an autotrophic form of gathering energy and converts CO2 to the oxygen in which we breathe. Plants are also the consumables carrying the highest forms of raw energy and act as a platform for all other kinds of consumers (primary, secondary, Etc..) to subside off. b) What would happen if most of the forests of Earth were cut down? (1 point) Co2 production would skyrocket and the basis of life would become unstable. Basically, we would all die if there were no more forests left. (There are some exceptions, but the planets carrying capacity would still decrease majorly.) c) How are the light reactions of photosynthesis important to the production of sugar? (1 point) They produce glucose.
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