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Ecology, Evolution and Biodiversity.

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Introduction

Definitions: Ecosystem A community of organisms and their surroundings, the environment in which they live in and with which they interact is called an ecosystem. An example of an ecosystem would be ponds or lakes, woods or forests. Habitat The area in which an life form occurs. It is where the organism is normally found. Population All number of living things of the same species in a habitat at any given time is known as the population. Community All the living things in a habitat or ecosystem, the total of all the population is known as the community. They aren't from the same species. Species A group of individuals of common ancestry that closely resemble each other and that are normally capable for mating with each other. Biotic factor The community of an ecosystem is called the biotic component. Abiotic factor The physical environment is known as the abiotic factor. ...read more.

Middle

Tropic Level The level at which an organism feeds in a food chain is called its Tropic level. Question 2 Question 3 Question 4 Question 5 Question 6 Carbon dioxide is present in the atmosphere at about 0.038% by volume. Photosynthesis withdraws about as much carbon dioxide during the daylight each day as is released into the air by all the other processes, day and night. We look at the effect of low levels of atmospheric carbon dioxide because this natural component of the atmosphere maintains a favorable environmental temperature on earth, known as the green house effect. An more simpler definition of the greenhouse effect would be: Natural process that's essential to maintain the plants climate. The greenhouse gases, such as carbon dioxide, methane, nitrous oxide, ozone and other trace gases and water vapor cover the earths atmosphere like a giant "greenhouse". The gases allow the suns energy. It also traps heat, causing the earth to be a much warmer place. ...read more.

Conclusion

Question 11 Evolution is the process of cumulative change in the heritable characteristics of a population. It means the processes by which life has been changed from its earliest beginnings to the diversity of organisms we know about today. Charles Darwin stated that organisms produce far greater number of progeny than ever give rise to mature individuals. The number of individuals in species remains more and less constant, therefore, a higher mortality rate. The individuals in a species are not identical but show similar characteristics. Therefore, come will succeed better then others in the competition for survival. He also stated that hereditary resemblance between parents and offspring is a fact. Therefore subsequent generations will maintain and improve in the degree of adaptation of their parents. Question 13 The binomial system is a way that scientist name animals and plants to avoid confusion. By this system everyone, anywhere knows exactly which organism is being referred too. This is to avoid confusion. Each organism is given two Latin words. The first (a noun) designates the genus and the second (an adjective) names the species. Science Gaurav Mishra ____________________________________________________________________________________________________________________________________________________ Ecology, Evolution and Biodiversity ...read more.

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