The work of Rachel Carson and the other ecologists has revealed the terrible consequences of the overuse of DDT. These ecologists worked at the ecosystem level of environmental interaction because they studied the depth of relationships between organisms and their environment.
An ecologist studies environmental problems and determines what causes them and how to improve the situations. In research, they gather data and analyze that for importance. Although, DDT (Dichloro Diphenyl Trichloroethane) was developed or invented as the first of the modern synthetic insecticides in 1940.
Hence, Rachel Carson and other ecologists found that overuse of DDT causes harm to the human liver and reproduction. As a result, humans face symptoms like vomiting, tremors, or shakiness. These problems were affecting the ecology and causing environmental disbalance. So those ecologists were working on the ecosystem level to solve the problem.
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Ice should be applied within the first 5-10 minutes after getting the injury and leave the ice for
20-30 minutes. This can be repeated every 2-3 hours or so for the next 24-48 hours.
If you consider the first 48 hours, and this timings, the frequency should be between 16 to 24 times. If you consider 24 hours, it should be between 8 and 12 times.
Answer:
D
Explanation:
Homologous chromosomes are similar but non-identical chromosomes received from each parent. They are non-identical in the sense that they may contain different alleles for the same gene. For example, in this case, D and d alleles on each homologue. These homologous chromosomes are usually involved in meiotic division, which occurs in a two-step division process; Meiosis I and II.
In meiosis I, homologous chromosomes separate/pulls apart, specifically during the anaphase stage. Alleles D and d borne on the HOMOLOGOUS pair of chromosomes are separated in the process with each of them going to either pole of the cell, according to Mendel's law of segregation.
Answer:
Nowadays, liposomes have become very popular in carrying numerous molecules in cosmetic and pharmaceutical industries. In addition, in food and farming industries, it has been extensively studied that the use of liposome encapsulation to develop delivery systems. The new delivery system can entrap unstable compounds (such as antimicrobials, antioxidants, flavors and bioactive elements) and shield their functionality.
In recent years, liposomes are designed for advanced biotechnology product delivery systems, including antisense oligonucleotides, cloned genes, recombinant proteins and drugs. The delivery system using liposome has many benefits. For example, the solubility of lipophilic and amphiphilic drugs can be improved by loading them in liposomes.
Currently, because of severe side-effects and toxicity, quite a few drugs on the market can only be used in the direst situations. Many of these drugs have exceptional antimicrobial effect, however, the poor pharmacokinetic and pharmacodynamic properties limit their use. Drug encapsulation using liposomal or lipid drug delivery system can improve the problems mentioned above to such an extent. Therefore, the drugs can be brought into regular use with improved pharmacokinetic and pharmacodynamic properties.
Explanation:
https://www.creative-biostructure.com/pclass-liposomes-products-5.htm
Answer:
Types of Wetlands
tupelo gum trees
Tupelo Gum Pond, Source: Missouri Dept of Conservation
