What are the two basic components of any ecosystem?
The two basic components of any ecosystem are abiotic and biotic ("Two Main Components of an Ecosystem," n.d.) .
The biotic component s of an ecosystem is the livings thing and ecosystem that exist in an ecosystem that includes animals and plants.
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Abiotic components of an ecosystem are the non-living things in an ecosystem that biotic factors rely on to survive, which includes light, water atmosphere soil ("Trophic level," n.d.).
What two physical factors determine the type of biome that is present in an area?
The physical factors determining the biome in an area is the temperature and precipitation
explain why autotrophs are called producers and heterotrophs are called consumers (.5 pt)
Autotrophs are called producers because they produced their food. Autotrophs make their food and do not need to feed on other organisms, thus referred to as producers of the ecosystem. Heterotrophs are called consumers because they rely on other living organisms for food. Heterotrophs cannot produce their own food and thus rely on what is already, therefore referred to as consumers of an ecosystem ("Trophic level," n.d.) .
Select the correct answer from the terms in the parentheses. The ecosystem will recycle (energy /nutrients ). But the ecosystem will not recycle (energy/nutrients)
Define trophic level
Trophic level is the position an organism occupies in the food chain or the ecological pyramid with similar feeding mode ("Trophic level," n.d.).
This question is based on the following description a\of ban ecosystem: Organism A is a plant that performs photosynthesis. Organism B eats organism A; Organism C eats organism B and D eats organism C. this is summarized in the following diagram: A B C D. the direction of the arrows indicated the organism that eats the other.
Based on this example, fill in the blanks with an appropriate answer.
Organism A is a producer; organism C belong to trophic level secondary consumers
If an herbivore consumes 200 pounds of plant material, roughly how much is converted to herbivore use? (.5pt)
20 pounds
When considering the ecosystems, explain the basic difference between reservoirs exchange pools.
Reservoirs are the abiotic factors that are the non-living while exchange pools are the biotic factors of the ecosystem
Identify two reservoirs for carbon(.5pt)
Reservoirs for carbon are the ocean biomass which contains inorganic carbon
Also , the soil contains organic carbon from the soil microorganism
Name four greenhouse gases.
Carbon IV oxide
Methane
Nitrogen II oxide
Hydrofluorocarbons
Explain how the burning of fossil fuels disrupts the normal carbon cycle.
Burning of fossils increases the amount of carbon released to the atmosphere; this is because the combustion of carbon combines with oxygen to form carbon IV oxide, thus increasing the amount of carbon IV oxide in the carbon cycle.
Identify the type of specific pollution caused by nitrogen or its compounds.
Water pollution. It causes eutrophication because of the acid deposition on the water basins
Identify the three components involved in the cycling of chemicals in the biosphere.
Inputs components
Internal cycling components
Outputs components
What are the stages in the nitrogen cycle that produce the compounds necessary for plant growth?
Nitrogen Fixation
Nitrification
Assimilation
Identify and describe two types of sources of water pollution.
Pathogens pollution. It a water pollution that carries disease-causing microorganisms like viruses, bacteria, parasitic worms, and protozoa, which leads to water-borne diseases like dysentery, typhoid, and cholera thus causing harm to human being and other animals in the ecosystem
Also, wastewater pollution which organic waste from industries and domestic waste. The organic waste is very deadly, thus destroying aquatic life since the garbage is not treated.
What is a good definition of cultural eutrophication? (.5pt.)
Cultural eutrophication is the speedup of natural eutrophication caused by human activities. It includes alteration of nutrient input into a water basin by human activity like farming along river banks, thus increase natural eutrophication because of the addition of mineral to water sources. Also, soil erosion, in another form of cultural eutrophication caused by human activities on the land.
What is a good definition of exponential growth? (.5pt.)
Exponential growth is a systematic and measurable growth of the organism. It occurs when the resources are unlimited in the habitat, and thus organism grows in a normal curve.
Explain how potential biotic effects are carrying capacity.
When organisms start to compete for the limited resource due to a large number of consumers that producers, thus the carrying capacity will not be proportional in that the consumers are more than the producers.
Define the population growth rate and how it is calculated.
The population growth rate is the rate of increase of individual numbers in a specific period on time expressed as a fraction of the initial population .
It calculated by finding the annual percentage growth rate then dividing by N the number of years.
If the birth rate is 25/1000 and the death rate is 9/1000 per year, what is the population growth rate? (.5pt)
The population growth rate is 0.016
What are the three age groups of the population that are depicted in structured age diagrams? Which one has the greatest impact on the increased population growth in LDCs?
Pre-productive stage
Reproductive stage
Post-productive stage
Among the three groups, the pre-productive stage has the most significant impact of an increase in the population of LCDs
Define the sedimentary cycle and give examples
The sedimentary cycle is a process that occurs when minerals are broken down by withering. It occurs in two-phase that is the solution phase where weathering release minerals salts to earth crust which form salts that dissolve in water and the minerals deposited on the deep sea than on the next phase, the rock phase the settles salts deposited on sediment rocks are also withering and recycled (Gaia, 2006.).
Examples of the sedimentary cycle are the phosphorous cycle .
Identify and describe two types of source of water pollution
Organic pollutants, which include fertilizers and organic matter that contaminated water destroying aquatic life, this occurs where organic matter is directly realized to water.
Inorganic pollutants contain salts and metals, especially industrial effluents being released to water sources without treatment, thus causing harm to the aquatic life.
What is the danger presented by chlorofluorocarbons? (.5pt)
Fluorocarbons destroy the ozone layer
What is biodiversity, and what contributes to its loss?
Biodiversity is the variability among living organisms from all the sources in the ecosystem, including marine, terrestrial, land, and air, and the ecological complexes which they are part of, which also includes diversity among species and of the ecosystem (Gaia, 2006.) .
What contributes to biodiversity includes natural disasters and calamities, diseases, pest infestations, all forms of pollutions, and habitat destruction (Gaia, 2006.).
What is a good definition of the consumptive use of a resource? (.5pt)
A good definition of consumptive use of resources is when the resource is used directly. Also productive use of value meaning they are produced and used locally.
Define a sustainable society. (5pt)
According to Viederman (1993), a sustainable society is a society that can provide a healthy and vitality of human life and culture for the current genera nation and well future generations. A sustainable society can protect human life, environment, and conserve the environment.
Would ecotourism be considered a direct or indirect value of biodiversity?
Ecotourism would consider the indirect value of biodiversity
Identify 4 characteristics of an unstainable society.
Air and water pollution
Deforestation and desertification
Global warming
Wildlife habitat destruction and land degradation
Identify four characteristics of a sustainable society.
Multi-use farming to provide a sustainable food system
Recycling and composting
Preservation of water sources and catchment areas.
Well-integrated pest management
References
Cultural eutrophication. (n.d.). Retrieved from http://biology-online.org/dictionary/Cultural_eutrophication
Gaia. (2006., September 14). Sustainability. Retrieved from http://environment-ecology.com/what-is-sustainability/247-sustainability.html
Trophic level. (n.d.). Retrieved from https://www.biology-online.org/dictionary/Trophic_level
The Two Main Components of an Ecosystem. (n.d.). Retrieved from https://classroom.synonym.com/two-main-components-ecosystem-30336.html
Viederman, S. (1993). A Sustainable Society: What Is It? How Do We Get There? The George Wright Forum, 10 (4), 34-47. Retrieved from www.jstor.org/stable/43597318
