The graph shows how dissolved 02 and CO2 levels changed in a pond over a 24-hour period. What caused the decrease in 02 concentration during the night?

Q: You measure the temperature of a pond during all 4 seasons and get the following average…

A: Water of pond holds the oxygen i.e essential for the sustainance of life. Oxygen is usually found in…

Q: What freshwater source would you predict has the lowest dissolved oxygen concentration?

A: Oxygen is considered the major factor for the survival and various physiological functioning of…

Q: List the two sources of dissolved oxygen in a lake

A: Individuals in the community interact with each other and the non-living components of their…

Q: How might this pollution affect terrestrial organisms that depend on the water for drinking water?

A: Land pollution is a type of destruction of the earth's land. It can be either naturally or as a…

Q: Which process explains why the water lovels in the rain gauge decreased from Thursday to Saturday?…

A: Rain gauge is a process of collection of rain water which can be used for any purposes whenever…

Q: Explain why you can't tell true water quality just by looking at it.

A: Water quality refers to the chemical, physical, and biological characteristics of water based on the…

Q: What is the average salinity of the ocean? 50% a O b 50 ppt 35 ppt O d 20%

A: The average salinity is generally measured in ppt (parts per thousand). If a solution has average…

Q: What impact does water pollution have on ecosystems and habitats? Explain.

A: Given: Impact of water pollution on Ecosystems and habitats.

Q: Which season would we be most likely to find anoxic "dead zones" in the Chesapeake Bay? Autumn O b…

A: The Chesapeake Bay is located in the Mid-Atlantic region and is primarily separated from the…

Q: Explain in simple terms “acidic rainwater can leach aluminum from soil clay particles and then flow…

A: An ecosystem is a population of plants, animals, and other species, including air, water, and soil,…

Q: List two sources of dissolved oxygen in a lake and based on your understanding of those sources,…

A: Dissolved Oxygen is the amount of gaseous oxygen (O2) dissolved in the water.

Q: Explain how fog forms off the San Francisco coast. For a complete answer, you need to use the…

A: The term fog is associated with the cloud that is comparatively closed to ground than to the sky.…

Q: How is water in the aquifer replenished?

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

Q: if water from a river is sampled upstream and downstream from sewage treatment plant, then the level…

A: Sewage is defined as a wastewater which is discharged mainly from.the households; Institutions ;…

Q: What is the leading cause of water pollution? Mining Factories Sewage treatment plants Agriculture…

A: Human beings have been abusing the water bodies around The world by disposing into them all kind of…

Q: Describe the possible effects of acid deposition; On lakes On oceans On soil On plant life

A: When the chemical reactions occur due to the absorption of carbon dioxide and results in the reduced…

Q: Which of the following does not vary predictably with the depth ofthe aquatic environment?a.…

A: In aquatic environment, the amount of dissolved oxygen, nutrients, temperature and penetration of…

Q: Increase in concentration of the toxicant at successive trophic levels is known as what?

A: The trophic level is nothing but a position acquired via an organism in the food web.  The food…

Q: The following table gives the total amounts of water and salt in the oceans and the total influx of…

A: The total amount of water in the ocean – 1.4×1018tons The total influx of water from the river –…

Q: Define three types of wastewater collection systems (Sewer Systems)? Describe any three sewer…

A: Step 1 Sewer system or sewerage system comprises a network of pipelines and technical installations…

Q: Aquatic organisms that are hypoosmotic relative to the surrounding water tend to A. Gain water from…

A: Aquatic organisms that are hyposmotic relative to the surrounding water tend to gain salts from the…

Q: Name: Period: Date: The Water Cycle The water cycle, also known as the hydrologic cycle, is the…

A: Water cycle is movement of water in the atmosphere. Water evaporates from the surface of ocean and…

Q: You are testing a sample of water from a nearby lake that has very few fish living in it and you…

A: Diffusion from the environment, aeration of the water as it tumbles downfalls and rapids, and as a…

Q: Discuss human activities that could affect the quality of natural waters in your locale.…

A: A variety of factors continue to have a negative impact on our natural water supplies. Many of…

Q: Explain what would happen if: There is excessive growth of algae in a waterbody.

A: Algae are significant because they are the primary producers of biomass in the aquatic ecosystems.…

Q: Scientists tested the temperature of a community swimming pool every hour for 10 hours. The…

A: Answer is option b

Q: Which potential source of water pollution is a nonpoint source? Sewage treatment plant Electric…

A: Activities performed by humans result in the production of some byproducts which are known as…

Q: Name the most common indicator organism that represent polluted water.

A: Indicator organisms are those organisms that are used to determine the condition of a particular…

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: Based on the graph, at what depth do we find the thermocline of this lake? Thermocline in a…

A: The graph depicts the relationship between temperature and the depth of stratified lake.

Q: Water vapour is not a greenhouse gas,but amplifies the green house effects of gases ....true or…

A: Green house effect is a process when the gases in the atmosphere absorbs the radiation from the…

Q: For the reservoir, estimate the evaporation in the month of June by Penman formula, given latitude=…

A: The Penman-Monteith equation is widely used in land process modeling to estimate vegetation…

Q: List any three important pollutant of water.

A: Water pollution is the contamination of water bodies, usually as a result of human activities. They…

Q: Temperature (°C) 1 10 15 20 25 30 Concentration of Oxygen in Water Oxygen Concentration in…

A: The warmer water contains low amount of dissolved oxygen than the cold water. This is because the…

Q: a. What is the value of net community production (µM O2 /hr)? Would this sample be a source or sink…

A: The aquatic ecosystems consist of mostly microscopic plankton as the producers as well as the…

Q: What is the effects to the ecosystem when always experience floods when haivy rains pour?

A: The frequent heavy rains can lead to flooding and hence have positive and negative impacts on the…

Q: In the figure below, which zone is expected to have the highest infiltration rate? Why (give two…

A: Infiltration rate is the tendency of the water flow it is the speed with which the water tends to…

Q: According to the data shown in the map, which state is experiencing the most severe overall declines…

A: The above map shows changes in Ogallala aquifer water levels from the historical level to the year…

Q: a) What substances can make water in lakes and ponds hard?   b) Are these substances generally…

A: a) The presence of calcium and magnesium ion makes the water hard. It is usually expressed in terms…

Q: Place each step of the water cycle in its correct location. Evaporation Runoff Precipitation…

A: The complete process in which water is circulated from the surface of the earth the atmosphere, and…

Q: Imagine you are testing water samples from a local pond for pollutants. Your lab instructor sees the…

A: Dissolved Oxygen is defined as the measure of how much oxygen is dissolved in water i.e., the amount…

Q: List two factors that will influence the movement of groundwater through sediments

A: Groundwater is the water found under the earth 's surface . It is present all or part of the empty…

Q: A river reached a flood that was passing through it. At a given instant, the storage of water in the…

A: A branch of earth science that is related to the water in streams and lakes, rainfall and snowfall,…

Q: is an area designed to keep wastes from contaminating groundwater.

A: Waste is the discarded materials  or these are materials which are unwanted and unusable also known…

Q: Describe the effect of climate change on both dissolved carbon dioxide and ocean pH using…

A: The long term of weather in a particular area is known as Climate. The change is climate has become…

Q: The diagram represents the processes taking place in the water cycle

A: The water cycle or hydrologic cycle is a biogeochemical cycle which involves the continuous movement…

Q: Concentration of Oxygen in Water Temperature (°C) Oxygen Concentration in Freshwater (ppm) Oxygen…

A: Introduction:              Fresh water contains more dissolved oxygen than the seawater and it is…

Q: Estimate the maximum depth of the euphotic zone in a eutrophic lake.

A: There are three zones in water bodies depending upon the availability of light with respect to the…

Q: State four reasons why even degradable contaminants ten to persist in groundwater

A: Degradable wastes or pollutant such as discarded vegetables or domestic sewage do not need any…