Biology

Chapter 9: Endangered ecosystem Section A 1. Which of the following atomic number 18 compassionate activities that culminationanger on the ecosystem? State true or false. a. unfit planning of development[] b. Sustainable agricultural methods[] c. Illegal chase[] d. industrial activities[] e. Deforestation[] f. Gardening[] g. Burning of domestic go off[] h. Coal-fueled power stations[][8m] 2. Eutrophication Rearrange the episode of events in eutrophication by writing the numbers at the end of the statement. a. Bacteria employ up oxygen (BOD high)[] b. The pond is cover with algae (algal bloom)[] c. The work of excess manure (organic fertiliser) into the pond [] d. goal of algae[] e. aquatic organisms die[] f. Decomposition by aerobic bacteria[][6m] learning : For uncertainty 3 and 4, choose the correct answer in the rap given. 3. Green house exploit [pic] ? The glas shouse effect is the phenomenon of an nub on in the .. of the Earths atmosphere. ? The nursery effect is an primary(prenominal) graphic process. Without it, the Earth would be too cold for the natural selection of living organisms.

? Examples of greenhouse assailes such as , chlorofluorocarbons (CFCs) ,., .. .. and ozone. ? These greenhouse gases, peculiarly carbon dioxide, trap and absorb in the atmosphere, create a rise in the temperature of the atmosphere. ? As the concentration of greenhouse gases rises, the greenhouse effect become more pronounced. ? The layer of gas acts as insulator to prevent the heat en! ergy from macrocosm transmitted to space. ? As a result, the Earth temperature increases causing globular warming. ? The ostracise effects of global warming: 1. ......... 2. Change in fall patterns 3. Change in species 4. Reduced food sources 5. Health...If you desire to demoralise a full essay, order it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay