Ion exchange
method affect the solubility and function of protein, and proteins can be separated
on the basis of the charge they get. If pH is greater than
pI of a given protein, that protein gets
negative charge and become an anion, and when the pH
is less than the pI of that same protein, it gets positive
charge and become a cation.
The statement which best explains why adequate wastewater treatment is necessary for urban areas is; "Wastewater cannot be purified by nature.".
Urban areas refer to those areas that have a dense population of people and also have quite a number of industries that generate several tons of waste. Disposal of these wastes is often an important environmental concern.
Many of the wastewater produced in urban areas contain chemical substances such as cleaning agents, persistent organic pollutants, heavy metals etc. Nature can not remove these waste materials. They can only be removed by appropriate wastewater treatment.
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Oil and water cant be a solution because they don¨t mix because of there density.
Answer:
African Honeybee:
Phylum: Arthropoda
Species: Apis mellifera
Genus: Apis
Kingdom: Animalia
Order: Hymenoptera
Class: Insecta
Tribe: Apini
Grasshopper:
Phylum: Arthropoda
Informal group: Acridomorpha; Dirsh, 1966
Kingdom: Animalia
Class: Insecta
Order: Orthoptera
Black Widow Spider:
Scientific name: Latrodectus
Length: Southern black widow: 1.5 in.
Class: Arachnida
Order: Spider
Phylum: Arthropoda
Mosquito:
Scientific name: Culicidae
Order: Diptera
Class: Insecta
Speed: 1 – 1.5 mph
Clutch size: 100 – 200
Yellow Jacket:
Phylum: Arthropoda
Family: Vespidae
Genus: Vespula or Dolichovespula
Order: Hymenoptera
Class: Insecta
Kingdom: Animalia
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