Few synthetic organic chemicals are dangerous in the very low concentrations in which they enter the ocean. How are these concentrations increased? What can be the outcome when these substances are ingested by organisms in a marine food chain?

Q: Which of the following requires aerobic conditions?   Question 7 options:   A)  nitrogen fixation…

A: Two basic stages in the treatment of wastes - primary and secondary In the primary stage, solids are…

Q: 1) dissolved inorganic carbon such as bicarbonate, is plentiful in the surface ocean. a- In one…

A: Carbon is present in all life forms and it is a primary component of many macromolecules such as…

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: How do you think we might solve the problem of eutrophication in the Chesapeake Bay? Assess several…

A: Introduction  Water pollution is a very severe concern. Water pollution can occur due to various…

Q: Please select the correct sequence of steps involved in the creation of a dead zone in a water body.…

A: Dead zones are the regions of waterbodies which do not support life. These zones are devoid to…

Q: A lake has a pH of 7.7 and contains many species of plants and animals. What can be concluded about…

A: The pH of pure water is 7. Here, the pH of the lake water is 7.7 which is slightly basic in nature…

Q: If Earth is filled muchly of di-nitrogen gas, why is the productivity of se many ecosystems limited…

A: Introduction  Our environment contains lots of gases such as CO2, N2, O2.  All these gases have…

Q: The diagram shown here illustrates a typical marine food web that can be contaminated with mercury.…

A: When two or more than two food chains interconnect with each other to form a food chain network, it…

Q: If salinity changes (increases) in a freshwater body, what influence would this have on aquatic…

A: Introduction  Salinity is very important factor of aquatic ecosystem. Aquatic ecosystem is mainly…

Q: If earth is filled in di-nitrogen gas, why is the productivity of so many ecosystems limited b…

A: Nitrogen is the 7th element in the periodic table. It is discovered in 1772 by the Scottish…

Q: ly by carbon dioxide and many marine organisms that produce carbonate shells 2. Why are human…

A: Introduction: The uptake of carbon dioxide from the atmosphere causes an ongoing decline in the pH…

Q: How might it be possible to cleanse an aging eutrophic lake? Consider chemical, biological, and…

A: Eutrophic lake is a lake in which there are a lot of nutrients which come in the lake by surface…

Q: 38. The oceanic zone is much less productive per square meter than the neritic zone because: (a) it…

A: Hello! Since you have asked multiple question, we will solve first three questions for you. If you…

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: 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: Which of the following statement about CBOD and NBOD is wrong? O CBOD is carbonaceous biological…

A: BOD ( Biochemical Oxygen Demand) refers to as, the amount of dissolved oxygen needed by aerobic…

Q: Local conditions, such as heavy rainfall or the removal of plants, may limit the amount of nitrogen,…

A: Carbon, nitrogen, phosphorus, and calcium are physiologically important elements across all life…

Q: Chemoautotrophic bacteria and archaea are the main primary producers for food webs______ . a. in…

A: Chemoautotrophs are the types of organisms that oxidize inorganic compounds to derive energy instead…

Q: Altered biogeochemical cycles combined with climate change increase the vulnerability of…

A: Healthy biological systems and rich biodiversity are crucial to life on our planet. Environmental…

Q: Which of the following statements is correct? A) Microorganisms are significant contributors to the…

A: Microbiology is the branch of science that deals with the study of microorganisms. Microorganisms…

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: What do you think are the multiple stresses that aquatic environments are exposed to? Where do these…

A: Stressors are the changes in the environmental conditions due to which there is decline in the…

Q: Water is less dense as a solid than as a liquid. How does this property typically affect a lake…

A: Lake ecosystem can be defined as the type of ecosystem formed by the interaction between biotic, and…

Q: Why do we need to put a dollar value to nautral resources?

A: The ecosystem services provided to us are quite vast and priceless. They not only provide us with…

Q: Why can’t marine organisms use the nitrogen gas dissolved in seawater?

A: Nitrogen is a critical constituent of chlorophyll, proteins, and nucleic acids. Nitrogen, like…

Q: If there is no “away” where organisms can get rid oftheir wastes due to the law of conservation of…

A: The law of conservation of matter states that matter cannot be created or destroyed, only changed in…

Q: Hypoxia in the Gulf of Mexico is caused by:     "An overabundance of unicellular algal growth;…

A: The stratification prevents the mixing of oxygen-rich surface water with oxygen-poor water on the…

Q: Which of the following water sources will most likely have the highest amount of dissolved oxygen? O…

A: Water bodies absorb oxygen from the atmosphere and this amount of oxygen that present in water is…

Q: microplastics

A: It's likely that ingesting microplastics could further expose us to chemicals found in some plastics…

Q: In the past, how it disposed of ewaste such as computers and toxic waste such as batteries? Moving…

A: Waste can be defined as the substances which cannot be used again once their primary purpose is…

Q: What do you think happens to this plastic? List a few examples of plastic impacting ocean ecosystems…

A: Hi! Thanks for your question. The first part of the question is incomplete and we need to know what…

Q: The diagram shown here illustrates a typical marine food web that can be contaminated with mercury.…

A: Marine ecosystems and terrestrial ecosystems contain many trophic levels. Photosynthetic and other…

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: Which organism would you predict to have the highest level of mercury? Explain your answer.

A: The given food web is of aquatic type.  As we can see, different organisms depending upon each other…

Q: what is the most important source of water on Earth?

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

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: How can the use of fertilizers result in reduced 02 concentrations in the waterways?  Can you also…

A: Eutrophication indicates the quality of water and the studies of algal communities provides…

Q: Waterborne microorganisms can survive in water with small amounts of nutrients but thrive in…

A: Introduction Water pollution is the contamination of water bodies when harmful substances often…

Q: In the sediments at the bottoms of ponds and lakes, there is often absolutely no O2 at depths of 0.5…

A: In silt of sand or mud at the lower part of an ocean or lake, the spaces between the mineral…

Q: Oxymyl, an poisonous pesticide used to kill insects, is water soluble and degrades within days or…

A: The chemicals that have killing effects on pests, insects and weeds are sprayed on agricultural…

Q: Describe the condition on earth following the asteroid impact 65 million years ago. How long did it…

A: Exactly 65 million years ago an asteroid from 6 miles across hit the earth.  It caused a huge…

Q: The highest DDT concentration in aquatic food chain is occurred in what?

A: Dichlorodiphenyltrichloroethane (DDT) is an odorless, tasteless, and colorless compound. It is a…

Q: Carbon can be sequestered in the ocean in a variety of forms. Discuss the different forms, their…

A: Carbon sequestration is termed used for the process of storing carbons in the carbon sink such as…

Q: ERPRETATION Dissolved oxygen is oxygen that is trapped in a fluid. Since many living organisms…

A: The amount of free, non-compound oxygen contained in water or other liquids is referred to as…

Q: Which of the following best describes a decomposer a.An organism that feeds on biological remains…

A: Decomposers assume a significant part in each biological system. Without decomposers, dead life…

Q: Which step is the last in the formation of fossil fuels?

A: Subjecting the organic Matter to extreme pressure and temperature.

Physical and Chemical features

The physical property of a compound could be determined without modifying the originality of the compound. Examples of physical properties are density, hardness, color, boiling, and melting point. The chemical property expresses the ability of a compound to undergo a particular chemical change.