All organisms at the top trophic level_______ . a. capture energy from a nonliving source b. obtain carbon from a nonliving source c. would be at the top of an energy pyramid d. all of the above

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: The deep scattering layer is created by which of these: a) seasonal changes in the thermocline b)…

A: Phytoplanktons are marine algae that are able to synthesize their own food due to presence of…

Q: During eutrophication, increased respiration of. creates hypoxic zones. O Primary consumers O…

A: Eutrophication is the enrichment of water with nutritional salts, which produces structural changes…

Q: The producer in an ocean grazing food web is usually a________.a. plantb. animalc. fungid. plankton

A: Ecology is the study of interaction of organisms with one another and with the environment. Ecology…

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: These are the common threats in grassland biomes EXCEPT a. Illegal hunting b. Production of invasive…

A: The common threats in grassland biomes include: 1. Production of invasive species:  When exotic…

Q: A realized niche isa. the occupied portion of a fundamental niche.b. the theoretically available…

A: Both realized niche and fundamental niche refer to an environmental position occupied by the species…

Q: If there are many greenhouse gases, why is only carbon dioxide considered a cause of global…

A: Ecology is the study of interaction of organisms with one another and with the environment. Ecology…

Q: Which statement best explains why persistent, fat-solublechemicals such as methylmercury accumulate…

A: Heavy metals pass into food chain and with the rise in trophic level, their concentration increases…

Q: Chemical fertilizers:   a. supplement carbon fixation by crops. b. cause eutrophication. c.…

A: Introduction :- Fertilizers are of two types :- natural and artificial . Natural fertilizers are…

Q: Which process in the water cycle is facilitated by producers? transpiration condensation runoff D…

A: The chemical elements and water that are needed by organisms continuously recycle in ecosystems.…

Q: Biological magnification occurs whena. pollutants increase in concentration in tissues at higher…

A: The trophic level of the organism can be defined as the position and it occupies in the food web.…

Q: 1. Which of these abiotic factors would contribute to a clumped dispersion pattern in an ecosystem?…

A: When one type of species exhibited in a specific region . It is refers to as population . Population…

Q: Of the total amount of energy that passes from one trophic level toanother, about 10% isa. respired…

A: Answer is c.) stored as body tissue.

Q: Young lakes are often clear and with little plant life. Such lakes arecalleda. oligotrophic.b.…

A: The lakes have a very less amount of nutrients and dissolved oxygen in it, hence these lakes will…

Q: The greastes effect that hmans have on the carbon cycle derives from A) the production of methane…

A: There are resources in nature that occur without any interference or action of humankind, such…

Q: How would loss of fungi in a forest effect biogeochemical cycles in the area? a. Nitrogen could no…

A: Biogeochemical cycles  The movement of molecules or compounds like carbon dioxide, water, nitrogen…

Q: What are the consequences of having an excess of nutrientssuch as nitrates and phosphates running…

A: Eutrophication is a well known process in the environment

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: Marine animals and algae that live in the high intertidal zone of rocky shores are most frequently…

A:

Q: This form of a food web begins with waste materials and theremains of dead organisms.a. aquatic…

A: Answer is b.) detrital.

Q: Eutrophication isa. caused by an overabundance of nitrogen, which leads to an increasein bacteria…

A: Water pollution is defined as an undesirable substances in water that can affect the growth of other…

Q: The term BOD (Biological Oxygen Demand): Group of answer choices is a measure of the organic matter…

A: Biological oxygen demand Biochemical oxygen demand or BOD is defined as the amount of dissolved…

Q: Oligotrophic lakes have a. low oxygen, and high nutrient availability. b. high oxygen, and high…

A: this lake is more common in the cold area they have low algal growth they have clear water and is of…

Q: Earth’s largest carbon reservoir is______ . a. the atmosphere c. seawater b. sediments and rocks d.…

A: Answer is b.) sediments and rocks.

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: Name one in earth sphere with an abiotic component. A) Give one abiotic component in #1 B) What…

A: The two fundamental components that shape the environment are biotic and abiotic. All live creatures…

Q: Which of the following could be an effect of an excess ofsewage running into a freshwater…

A: Due to the contamination of fresh water by sewage all of the above can takes place.

Q: When biological oxygen demand (BOD) becomes very high:(a) The amount of dissolved oxygen…

A: Environment refers to the sum of all living and non-living organisms or elements that is present in…

Q: Increased average water temperature in Lake Erie as a result ofclimate change would most likely have…

A: Climate change is affecting the Earth's lakes at large scale. An increase in the air temperature is…

Q: Allof the following statements concerning oligotrophic lakes are true, except:a.warm…

A: BASIC INFORMATION  TROPHIC STATE INDEX (TSI) This is a system which is formed to find out the…

Q: The main cause of the increase in the amount of CO2 in Earth’satmosphere over the past 150 years…

A: The atmosphere of Earth is protecting the living things from the harmful ultraviolet radiation of…

Q: When climbing a mountain, we can observe transitions inbiological communities that are analogous to…

A: The latitude determines the biodiversity of a particular area. From the pole to the equator, the…

Q: The Great Pacific Garbage Patch is an example of а. Техas. b. gyres. c. plastic. d. a fishing…

A: According to the guidelines we can answer the 3 sub parts only so as you asked except 1,2,3,4 i…

Q: Which component of an aquatic food chain captures carbon dioxide and converts it to sugar? Solar…

A: The aquatic food chain is a food chain that takes place in water. It is made up of phytoplankton,…

Q: tend to occupy the base of food webs. a. mediatrophs O b. trophytrophs С. heterotrophs O d.…

A: Option D i.e. autotrophs are the base of food web.

Q: Food chains are sometimes short because(A) only a single species of herbivore feeds on each…

A: Food chain is a linear representation of trophic level from producer to decomposer. It is a sequence…

Q: The carbon cycle and the water (hydrologic) cycle are similar in that (a) both cycle molecules…

A: A collection of species that live in close proximity to one another is referred to as an ecosystem.…

Q: We learned an ironic twist in the film called "The Other Inconvenient Truth."  It was that a.…

A: An Inconvenient Truth is a documentary in which Al Gore describes the problems of climate change…

Q: A salmon feeds on crabs and small fishes, which in turn feed on zooplankton that feed on…

A: Overfishing is a process of  catching too many fish at once, so the breeding population becomes too…

Q: The biological pump in the ocean O A) is independent of the atmosphere. O B) moves carbon to deeper…

A: Phytoplankton are microscopic plants that live at the surface of the ocean. They play an important…

Q: In a biogas production, algae is a resource that comes from O a. torestry residue O b. aquatic crops…

A: A non-conventional form of energy derived from the organic wastes such as leftover digested slurry,…

Q: Biotic potential is lower when A lifespan is long B. the age of first reproductive cycle is low C.…

A: The biotic potential is the capacity of a living species in a population to expand under given…

Q: Which of these occurs through symbiotic nitrogen fixation? a. The plant benefits from using an…

A: Any normal or mechanical cycle that causes free nitrogen (N2), which is a generally idle gas…

Q: A salmon has higher mercury levels than phytoplankton. This is due to______? A. Food-web…

A: Introduction : Bioaccumulation : The Steady Accumulation Of Substances In An Organism, Such As…

Q: Which of the following would not be included in a description of an organism’s niche? a. its…

A: G. Evelyn Hutchinson, a biologist, introduced the niche concept in 1957.

Q: Which among A-D is not a step in the eutrophication process? A) O rapid growth of algae and…

A: Eutrophication is a process by which a water body is excessively enriched by nutrients particularly…

Microbes

Microbes are microscopic living organisms that can only be detected with the help of specialized laboratory equipment called a microscope. These living organisms are so small that they are not visible to the naked eye.