How do living organisms produce minerals – for example, for their shells? Researchers have come one step closer to answering this mystery. Many organisms can produce minerals or mineralized tissue. A famous example is the nacre, which is used in jewelry because of its iridescent c...
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A. (2013). Stratification of living organisms in ballast tanks: How do organism concentrations vary as ballast water is discharged? Environmental Science & Technology, 47, 4442-4448.First MR, Robbins-Wamsley SH, Riley SC, Moser CS, Smith GE, Tamburri MN, Drake LA (2013) Stratification of ...
Air pollution has a quantitative understanding of the effects of human respiratory health (especially children). The results confirmed that the impact on human health to the fine particles of air pollution is most serious (China has 2/3 of the city exceeded), followed by sulfur dioxide pollution...
Now many people can not drink clear water because many of them are badly polluted. So in order to save water the first thing we should do is reduce water pollution. In addition we should develop good habits to save water. For example turn off the tap after we use. Or we should recycle...
Carbon is an element that is crucial for all living organisms. The major molecules that make up all living things contain carbon, and these are called organic molecules. Carbon cycles through the living things and the atmosphere in an ecosystem constantly....
The bacteria that legumes host within their root nodules (small swellings on the root) change nitrogen gas from the atmosphere into nitrogen compounds that plants are able to metabolize, a process, known as nitrogen fixation, that makes the soil more fertile. Other microscopic plants also are im...
Put this into a solution, bubble through nitrogen and add a cadmium sulphide semiconductor and you have adeconstructed artificial leafwith a twist: it now effectively produces ammonia from sunlight. “We’ve removed the living cell and its complexity and simply worked with an enzyme,” say...
Second, they may have dwelled on the seafloor. Again, there are examples of other types of primitive arthropods living this way, so it is possible that agnostids did too. On the seafloor they would have survived by scavenging dead organisms or by grazing on bacteria. ...
All living matter absorbs carbon from the atmosphere, including an amount of radioactive carbon-14. It is mostly found in atmospheric carbon dioxide because that is where it is constantly being produced by collisions between nitrogen atoms and cosmic rays. What can carbon-14 dating be used for?