Q: When excess nitrogen and phosphorus from local farms ends up, in river and inlets, what process can…
A: Nitrogen and phosphorus are the two main primary nutrients in commercial fertilizers and they play…
Q: Plants use carbon dioxide from the air and are therefore called _____. a. consumers b. producers c.…
A: Answer is b.) producers.
Q: Give an example of an inorganic nutrient pollutant. What is its effect on the aquatic environment?
A: Inorganic nutrients pollutant means that the nutrients in large amounts causing water pollution for…
Q: An oligotrophic ecosystem would be most likely to exist in a/ana. ocean b. high mountain lake c.…
A: Oligotrophs are the organisms that can live in a nutrient deficient environment. The growth rate,…
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: Thermal stratification in a lake a. is not modified by fall and spring overturn. b. leads to…
A: Thermal stratification in a lake is the formation of two different layers on the basis of…
Q: An algal bloom in an aquatic ecosystem can cause the depletion of which element? Select one: a.…
A: Algal bloom refers as rapid accumulation in algae population in fresh water or marine water…
Q: Which of the following is an Abiotic factor? A) Plants B) Water C) Consumers D) Animals
A: The non-living physical and chemical factors that affect the living organisms and the ecosystem is…
Q: Is it possible to describe abiotic factors as more or less important to an ecosystem than biotic…
A: Ecosystems are the structural and functional units of ecology in which living species interact with…
Q: The process by which microbes break down food and paper waste into nutrient-rich humus is called:…
A: The microbes are ubiquitous organisms that possess various metabolic transformation activities that…
Q: . Which of these ecosystems has the lowest net primaryproduction per square meter?(A) a salt…
A: The accumulation of energy as autotrophic biomass is called net primary productivity (NPP). It is…
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: The movement of mineral nutrients through organisms and their environment is called a ________…
A: Cells are the primary unit of life. Based on the number of cells an organism may be unicellular or…
Q: An ecosystem thrives with biotic and abiotic component parts. An example of an abiotic part of an…
A: Introduction:- An ecosystem is described as a community of living and non-living organisms that…
Q: Water droplets in clouds combine and grow heavier. Which step in the water cycle MOST LIKELY happens…
A: Correct option is D. Water falls to the ground as precipitation. Option A is incorrect because this…
Q: What two factors are most important in biome distribution? a. Temperature and latitude b.…
A: BIOME include all the plants and animals which live a particular land and interact with each other.
Q: Which of the following are ways in which bioterrorismcould be exerted?(a) Farm animals (cows and…
A: The implication of biological substances or agents with intention is called bioterrorism. These…
Q: Explain the effect of dumping untreated sewage into a pond on the eutrophication of the pond. A. The…
A: Eutrophication is defined as the process in which a water body will become overly enriched and…
Q: Define the following terms: a. nitrogen fixation b. MoFe protein c. Fe protein d. nitrogen…
A: Nitrogen is an essential nutrient abundantly available in the atmosphere in the form of dinitrogen…
Q: Which of the following is NOT the usual mechanism of transport of atmospheric microbes? A.…
A:
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: In most ecosystems, the primary producers use energy from______ to build organic compounds. a.…
A: An ecosystem is a group of living organisms that communicate as a system with the nonliving elements…
Q: Which of the following processes is not directly involved in the hydrologic cycle? (a) transpiration…
A: Answer is option d.)nitrification.
Q: Which organisms are considered the “recyclers” of our planet? (a) consumers (b) producers (c)…
A: Decomposers are called nature's recyclers, as they break down the organic matter in an ecosystem.…
Q: The practice of crop rotation uses nitrogen fixation to create fertile fields. First, a plant…
A: Nitrogen fixation is the process by which plants and associated bacteria fix atmospheric nitrogen…
Q: What are the taken actions nowadays to counteract the effect of pollutants in the air? Mention 4…
A: Worldwide, environmental change alludes to the changes over the time period which affect all the…
Q: Which one is not a pollutant normally? (a) hydrocarbon (b) carbon dioxide (c) carbon monoxide
A: The introduction of hazardous substances into the environment is referred to as pollution.…
Q: If you applied a fungicide to a cornfield, what would you expectto happen to the rate of…
A: Fungicides are the substances which kill fungus.
Q: Some species of which of the below kinds of organisms are employed as biopesticides? 2. Fungi 3.…
A: The correct option is A - Bacteria only
Q: Levels of CO2 and methane in the atmosphere have been increasing over the years. What effect is this…
A: The greenhouse effect is the natural warming of the Earth due to the presence of greenhouse gases in…
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: Give a) 3 examples of biotic components b) 7 examples of abiotic components
A: Biotic refers to the living components of an ecosystem and abiotic refers to the non-living…
Q: Other than precipitation, discuss how two other parts of water cycle are influenced by droughts. Why…
A: The water cycle is the hydrological cycle which demonstrates the continuous movement of water on,…
Q: Which of the following is not a source of salt in the ocean? X a. runoff from land b. weathering of…
A: We know that 70 percent of Earth cover by Ocean and Earth is Saline. Salt are present on Earth .The…
Q: describes life in soils? A: Soil food webs lack complexity compared to above-ground ecosystems.…
A: Correct option F: B, C, and D B: Soils contain both decomposers and predators that perform…
Q: The movement of water between the Earth's surface and atmosphere is the a. cycle of day and night…
A: There is a continuous movement of water between the earth and the atmosphere. Water, when gets…
Q: The ecosystem of a lake or pond can be divided into 3 zones. Which zone is very cold and consists of…
A: The ecosystem of a lake or a a pond can br divided into 3 zones. These are as follows: 1. Limnetic…
Q: Which factor is the LEAST responsible for bringing microbes onto plants? (Clue: quantitative) A.…
A: The most common microbes or plant pathogens are fungi or fungal-like organisms (FLOs), phytoplasmas,…
Q: 3. _______________ soils have very low bulk density compared with mineral soils. a. Organic c.…
A: Soil is the upper layer of the earth crust.
Q: Which one of the following is a Greenhouse gas? A. Oxygen B. Methane C. Sulphur dioxide D. Nitrogen
A: MCQ question asking about the greenhouse effect. It is asked that which gas is used in greenhouse…
Q: Which essential chemical must be “fixed” by soil-dwelling bacteria before it can enter the food…
A: The essential chemical must be “fixed” by soil-dwelling bacteria before it can enter the food chain…
Q: Give 10 examples of 10 biotic factors in surroundings
A: Introduction All living beings in an ecosystem are referred to as biotic factors. Their existence,…
Q: Which of the following would represent an ecosystem? a. A lake b. A fish tank c. A prairie d.…
A: An ecosystem is a geographical region in which plants, animals, and other creatures, as well as…
Q: Which of the following biomes is characterized by abundant water resources? a. deserts b. boreal…
A: Biome is a large ecological area comprising of many ecosystems in which biotic and abiotic…
Which of the following is a biotic factor?
a. wind
b. disease-causing microbe
c. temperature
d. soil particle size
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- Which of the following factors would explain why there is a decreasing trend of microbial population from top to bottom? A. There is a shift in the condition form oxic to anoxic. B. All statements are acceptable. C. The soil particles become larger and not weathered. D. There is a decrease in the available nutrients.Which of the following statements is NOT as description of soil? A. Varying nutritional content. B. Phototropic microbes are found only on the top few centimeters. C. A homogenous layer of organic and inorganic material. D. The area around the plant soil usually has the highest microbial populations.(ii) Which one of the following is non- biodegradable? A. DDT B. Vegetable peel C. Cardboard D. Bark of trees
- Which of the following is NOT the usual mechanism of transport of atmospheric microbes? A. Gravimetric deposition B. Wind updraft C. Precipitation D. EvaporationCamellia and azalea are plants that produce yellow leaves, which is considered an undesirable outcome, when they are grown on alkaline soil. Which of the statements below support the fact about camellia and azalea stated above? a. Loam soil is not advisable to be used in growing camellia and azalea because of its acidity. b. Camellia and azalea should not be planted in chalk soil. c. Camellia and azalea produced yellow leaves because they are planted in acidic soil. d. Camellia and azalea require chalk soil to counter the effect of the alkaline soil used.Which factor is the LEAST responsible for bringing microbes onto plants? (Clue: quantitative) A. Wind B. Precipitation C. Animals D. Insects
- Use of synthetic fertilizers often leads to the contamination of groundwater with nitrates. Nitrate pollution is also a suspected cause of anoxic "dead zones" in the ocean. Which of the following processes is most likely to help reduce nitrate pollution? A. adding methanogens to the soil B. adding nitrifying bacteria to the soil C. adding denitrifying bacteria to the soil D. using ammonia instead of nitrate as a fertilizerWhich of the following is NOT a mechanism of how microbes are able to reach deep subsurface portions of the crust? A. Water leaching B. Via gaps in the crust layer. C. Microbial degradation of top surface material D. Ground water41. Which layer of soil is found above the bedrock and below the topsoil, is brightly colored (usually reddish yellow, due to iron oxides, aluminum, and silica), but does not contain much organic matter? A. the A-horizon B. the B-horizon C. the C-horizon D. the O-horizon E. the E-horizon
- The layer of soil that is closest to the surface is known as the ______________ horizon. Question 7 options: a. surface b. organic c. substratum d. bedrock e. subsoil.A soil consists of layers called ________ that taken together are called a ________. a. soil profiles : horizon b. horizons : soil profile c. horizons : humus d. humus : soil profileWhich of the following is a process of the nitrogen cycle that involves the conversion of nitrogen gas to ammonia? a.Nitrogen fixation b.Nitrification c.Ammonification d.Denitrification
