HELLO science TLLM project ppt

HELLO :D : 

HELLO :D Slides by : May Yanni Mingsiew (leader) Yushan

How the ashes in the waters affect the marine ecosystem: : 

The ashes in the water will block out sunlight which make the marine plants unable to photosynthesize. Plants are producers and the energy is passed on to other animals either directly or indirectly. If plants are unable to photosynthesize, animals that depend on them would be affected, as well as other animals that depend on other animals for food. In other words, the food chain will be disturbed. This may pose a threat to the marine ecosystem as the many of the consumers suffers, without enough food, many of the marine animals would die. There will also be competition between the organisms for resources such as food, oxygen and light. Etc. How the ashes in the waters affect the marine ecosystem:

Ecosystem : 

It is made up of abiotic and biotic components and these basic components are important to nearly all types of ecosystems. It consists of the biological community that occurs in some locale, and the physical and chemical factors that make up is non-living or abiotic environment. Some examples of Ecosystems are: pond, forest, grassland. Ecosystem

Factors : 

Abiotic factors (non living, environmental): Examples: Sunlight Temperature Precipitation Water or moisture Air currents, Soil Factors

Biotic components: : 

The living things that shape an ecosystem. They are any living component that affects another organism. Such things include animals which consume the organism and the living food that the organism consumes. As opposed to abiotic components (non-living components of an organism's environment), biotic components are the living components of an organism's environment, such as predators and prey. Biotic components:

Factors : 

Biotic Factors: (living) Primary producer Herbivores Carnivores Omnivores Detritivores - scavengers which feed on dead plants and animals or their waste. Decomposers Etc. Factors

Temperature How temperature changes in water? : 

Surface water, be it a lake or a stream, tends to stay relatively stable in terms of temperatures. Seasonal changes bring about slow changes in temperatures that the waterway's plant and animal life can tolerate. Industries often use nearby water resources as cool water then discharge the warmed water back into the ecosystem. This action creates an unnatural and a too rapid increase in the water's temperature. Temperature How temperature changes in water?

Effects of temperature change : 

A sudden change in water temperature affects the organisms living in the water. Changes in water temperature can change fishes’ metabolism. Fish's metabolism slows in colder times where food resources are limited. If the water is warmed, the fish's metabolism increases however the fish is likely to die with the limited food resources. Effects of temperature change

Causes of the problem : 

Thermal pollution is caused by several types of industry. Cooling waters are often needed for electricity generation and nuclear power. Other industries such as paper mills also rely on cooling waters to conduct their manufacturing processes. Causes of the problem

Other Effects : 

Discharge waters from factories can have other effects on the ecosystem: If water flow is strong, it can introduce sediment into the water and cause soil erosion along the shorelines. The resulting cloudy water can block light, preventing plants to photosynthesize. Photosynthesis is the process by which plants make food. If a plant cannot make food or produce energy, it will die, further impacting the water quality. Other Effects

Turbidity : 

Turbidity describes how murky or cloudy water is. Water containing high levels of suspended particles is very turbid. Turbidity impacts dissolved oxygen levels in many ways: Turbidity-causing particles absorb a lot of Sun rays. When dark colored particles absorb rays, energy is released hence turbid water gets heated by the sun very rapidly. Water loses its ability to hold dissolved oxygen therefore turbidity can lead to a decrease in oxygen levels Turbidity is often caused by tiny soil particles washed off from the land. These particles contain nutrients that enhance growth of algae when combined with water and sunlight. When algae dies and decomposes a lot of oxygen will be depleted. Hence turbidity can cause lower levels of dissolved oxygen in water by causing algal blooms. Turbidity

How the atmosphere is affected : 

The atmosphere would face a decrease in the amount of oxygen as a result of increased turbidity when: When dark colored particles absorb rays, releasing energy and hence heat the water very quickly, causing the water to lose its ability to hold dissolved oxygen therefore turbidity can lead to a decrease in oxygen levels Turbidity can also lower levels of dissolved oxygen in water by causing algae blooms because turbidity-causing tiny soil particles washed off from the land contain nutrients that enhance growth of algae when combined with water and sunlight. Eventually algae dies and decomposes hence a lot of oxygen will be depleted. How the atmosphere is affected

Water Chemistry impacts on water chemistry : 

As water temperature rises, the amount of dissolved oxygen available for living organisms decreases. For cold water fishes such as trout, this change can kill the fishes. When water temperature changes too suddenly, fishes become stressed and vulnerable to disease. Then when great number of fishes die, the water chemistry is altered when the ammonia and nitrite levels increase. If left unchecked, the water becomes an ecological dead zone, unable to support any life. Water Chemistry impacts on water chemistry