Section 5.1 Assignment: Parts of Ecosystems 1. A. Take out the graphic organizer you made in the Guided Practice 5.1B 1: Biotic and Abiotic Factors. Make sure you have labelled the appropriate parts with the terms abiotic and biotic‚ and you have included at least four examples of each. You will hand this graphic organizer in with your section assignment. (2 marks) B. Choose one abiotic factor from your list. Imagine what would happen if you changed that one abiotic factor. Describe one
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over 500 million years‚ the plants all differ so much but they also have many similarities among themselves and also to green algae. Some scholars even think that plants paved the way for land animals by simultaneously increasing the amount of oxygen in the Earth ’s atmosphere and decreasing the amount of carbon dioxide. Evolutionist believe that plants evolved from green algae‚ they think this because: they both carry on photosynthesis‚ they both have cell walls made of cellulose‚ they make and convert
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for plants evolution from a freshwater algal species is supported by which of the following? Both green algae and plants have chlorophylls a and b and various accessory pigments. Both green algae and plants store excess carbohydrates as starch and have cellulose in their cell walls. Molecular evaluation of ribosomal RNA provides evidence of the evolutionary relationship of plants and green algae. All of the choices are evidence. Which of the following features would have helped early plant ancestors
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discovered that it contained large amounts of phosphuros‚ as they can not digest it. The new improved genetic modification Yorkshire pig was design so that it will braodly reduce the excessive of phosphorus pollution in the water supplies and will help algae from contaminating the
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such as toxins from heavy industry have directly killed plants and animals that are part of the marine ecosystem. Other pollutants‚ such as runoff from homes and farms‚ introduce chemical fertilizers into the water that create algae blooms on the surface. Large fields of algae deplete the oxygen in the water‚ block the sunlight to life on lower levels‚ and may even release toxins that poison fish. OFFSHORE DRILLING Comes with an inherent risk of accidents and spills that could have potentially devastating
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peaceful breed of shrimp. They can be put with almost any other dwarf shrimp in aquariums and like to live in temperatures around 60-82*F. This shrimp only grows up to 1 1/2 inches. Red Cherry shrimp thrive in planted aquariums where they eat algae and algae wafers. Female red cherry shrimp look different from the males. The females have a longer and rounder tail than the males usually. Reproduction between the shrimp is very simple‚ all you need is two shrimp‚ and a food source. Breeding occurs
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and the nutrients will be distributed throughout the cell. The paramecium also has contractile vacuoles on both ends. These contractile values get rid of excess water that the paramecium absorbed through osmosis from its surroundings. Paramecium eat algae‚ bacteria‚ yeasts‚ and dead organic
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Unfortunately this attitude is what makes the problem worse. In Canada alone there are hundreds of known invasive species including insects‚ birds‚ mammals‚ reptiles‚ amphibians‚ crustaceans‚ aquatic and terrestrial plants‚ marine and freshwater fish‚ algae‚ fungi‚ and molluscs. Many species are able to incorporate into the existing environment without harming it; however there has been an increasing number of invasive species that cause uncontrollable damage to local ecosystems. Some better known examples
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starts when farmers put fertilizers on their crops. The fertilizer can be washed off from the rain and can carry it to a nearby stream or lake. The nitrates and phosphates that are being put in the water fertilize algae and cause its population to grow. (Lenntech 1998-) When the algae dies and gets eaten by bacteria the bacteria will use up the oxygen causing the oxygen levels to go down the fish in the water will die. Another type of pollution that can affect our water is acid rain. This is when
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Nonpoint source pollution is land runoff from drainage‚ rain‚ and seepage and hydraulic modification. It is caused by rain or snow melt that moves through and over the ground. When the runoff moves‚ it collects and picks up manmade and natural pollutants and ends up spilling into lakes‚ rivers‚ streams‚ and coastal waters. Nonpoint source pollution can include things like motor oil‚ toxic chemicals‚ animal droppings‚ trash and even insecticides. Our drinking water needs to be protected. It takes
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