Earth’s largest carbon reservoir is______ . a. the atmosphere c. seawater b. sediments and rocks d. living organisms

Q: Scientists have predicted that we have 51 years of oil energy left to harvest and use. Why is that…

A: The prediction of how many years of oil energy we have left is based on current known reserves and…

Q: Decomposers a. break down dead organic matter in the environment by secreting digestive enzymes. b.…

A: According to Odum ,on the basis of trophic level ,an ecosystem has two major components namely…

Q: which is the currently CO2 content of Earth's atmosphere is approximately A. 1%. B. 20%. C. 25 ppm.…

A: Carbon dioxide determines the impurity of the air. In some amount the carbon dioxide is always…

Q: Abiotic factors are important to biotic organisms because they include    A.Weather and rocks B.…

A: Ecosystem is composed of biotic and abiotic factors. Biotic factors or biotic components are the…

Q: Waste from consumer products 1 Oil refining Cremation Waste incineration Chlorine/lye production…

A: The mercury is a highly toxic pollutant that is responsible for causing several diseases including…

Q: By pumping carbon dioxide and other greenhouse gases into the atmosphere, we are inadvertently…

A: Global warming is one of the serious concerns for environmentalists. Climate engineers study its…

Q: The effect of CO2 emissions from burning fossil fuels is likely to bea. nothing; photosynthesis by…

A: Fossil fuel is a natural fuel like coal or gas produced in the geological past from the sediments or…

Q: GMO crops such as ____ help farmers use smaller amounts of toxic pesticides because these crops are…

A: All crop plants are affected by a variety of insects and nematodes , and significantly reduce…

Q: What is the largest reservoir of carbon? O a. The oceans b. Sedimentary rock OC Living organisms Od.…

A:

Q: Which of the following has an indirect economic value? *       A. Animal skin used as belt       B.…

A: Economic value is one of many possible ways to define and measure value. Although other types of…

Q: Which of the following items could not be used as food by living organisms?   A. Twinkies   B.…

A: The products that are eatables are rich in carbohydrates, fats, vitamins, proteins and minerals.

Q: Which allows a variety of life to thrive in estuary ecosystems? A the temperature fluctuations B.…

A: Estuaries are a type of water body or wetland which is formed when the freshwater body [a river or…

Q: A. Primary

A: The life on the earth exist with help of energy which is transferred into a food chain or food web…

Q: The primary producers in an ocean grazing food web are usually ________. a. plants b. animals c.…

A: Food chain is a linear sequence of organisms starting from the lower level (producers) to the higher…

Q: 27. The French term parc (for privately-owned hunting preserves) has been around for centuries, but…

A: Introduction A national park is a national government-designated area for the preservation of the…

Q: The current biggest threat to biodiversity is _______________________. a. pollution b. climate…

A: Global biodiversity is irreversibly harmed and destabilized every time a species goes extinct or is…

Q: The cyanobacteria in Lake Erie would best be described as .a. decomposersb. tertiary consumersc.…

A: The condition in which there is a rapid increase in the population of algae in the water body; fresh…

Q: Which of the following events is NOT a common among microbes in the air?

A: Cellular death due to desiccation is not common among microbes in the atmosphere. Microbes are…

Q: The increased reliance on genetically engineered crops grew from the need to ____.​   a. produce…

A: The increased reliance on genetically engineered crops grew from the need to produce more food at…

Q: Passenger pigeons were driven to extinction________ . a. by introduced pathogens b. by…

A: Extinction is the term used to define the demise of a certain species or population from the earth.…

Q: The preservation of ecosystems indirectly provides fresh water becausea. trees produce water as a…

A: Ecology is the branch of science that deals with the interaction of organisms and also with the…

Q: Match the structure with the correct form of carbon. coal mine a. carbon reservoir Mediterranean Sea…

A: arbon is a chemical element which is most abundantly available and is a important element for all…

Q: 1. We can convert biomass materials into  _____ and blend them with gasoline and diesel for…

A: Conventional sources of energy like gasoline, coal etc are more polluting than non-conventional or…

Q: What is cutaneous respiration? Give 3 examples of air-breathing fishes.

A: Introduction  Respiration is the important phenomenon by which the living organism performs gaseous…

Q: All organisms at the top trophic level_______ . a. capture energy from a nonliving source b. obtain…

A: Ecosystems maintain themselves by recycling energy and nutrients obtained from external sources. At…

Q: 27. The French term parc (for privately-owned hunting preserves) has been around for centuries, but…

A: Introduction :- National parks are the sites of conservation for the wildlife. Wildlife includes the…

Q: Ancient Greece and ancient Rome tried to conserve energy in all of the following ways except: A.…

A: In the shadow of the emergence of human civilization and urban settlements, the history of Ancient…

Q: Below is an example of an Antarctic food chain. Sun ---> Phytoplankton ---> Krill ---> Squid --->…

A: Food chain is defined as the series of organisms in a chain. It depicts the flow of energy from…

Q: Greenhouse gases_____ . a. slow the escape of heat energy from Earth into space b. are produced by…

A: The greenhouse effect can be defined as the process in which there is the heating of the surface of…

Q: What process brings nitrogen from the atmosphere into living system? A. Methanogenesis B.…

A: Living matter contains a large amount of nitrogen incorporated into the proteins, nucleic acids and…

Q: The right granted by government to prevent others from the commercial use of biological resources…

A: Government has exerted some control for the prevention of the discoveries and invention regarding…

Q: The best long-term solution to the greenhouse gas problem is a.Develop a machine which absorbs…

A: Introduction Greenhouse effect is defined as warming of Earth’s surface and troposphere (the lowest…

Q: The starting point of all food chain are A. Plants B. Microorganisms C. Animals D. Humans

A: In ecology, the food chain refers to a series of transmissions of nutrients and energy in the form…

Q: 1. Of all of the fuels used by the United States to generate energy by combustion, over the past 200…

A: Energy consumption will rise in tandem with global population growth and the expansion of economies.…

Q: A toxin with a higher LD50 value is more deadly than a toxin with a lower LD50 value, assuming a…

A: LD50 value  Median lethal dose is a measure of lethal dose of a toxic chemical.

Q: Spurred by record breaking heat waves and drought in the United States, how did views on climate…

A: Introduction - Climate change is a long-term shift in the average weather patterns that have come to…

Q: The early earth atmosphere was _____. MULTIPLE CHOICE. Choose only one.  a. Reducing and favors…

A: Introduction : The growth of Earth's atmosphere over geologic time, or atmospheric evolution.…

Q: best s e comi

A: Marine biota can be divided into species that live in either the pelagic (plankton and nekton) or…

Q: What microbes is highest in agricultural lands? A. Aerobic nitrogen fixing bacteria B. Anaerobic…

A:

Q: Which of the following statement is true about fossil fuels? A. Lignite is the highest-grade coal

A: Fossil fuels are the the substances that provide energy after combustion.

Q: Which one of the following is not caused due to the PV power plants? a. Land pollution b. Battery…

A: The plants that use a large area of PV (photovoltaic) cells made from silicon alloys to convert the…

Q: Where

A: Introduction:-  The ozone layer is a thin part of the Earth's atmosphere that absorbs almost all of…

Q: does the global demand for grain increase at a rate faster than the global population? A. More…

A: Correct option; B. More grains are being wasted every year Explanation Approximately 3500 to 4500…

Air Pollution

The excess accumulation of pollutants or undesirable alterations in the environment and its resources such as air, water, and land can be referred to as pollution. Pollution affects the components of the environment. Pollution is considered a global issue as it is showing harmful effects worldwide. Metropolitan cities are more impacted by pollution than countryside or villages.