![pressure772](/avatars/49866.jpg)
pressure772
14.10.2019 •
Biology
Soil formation is most influenced by
a. wind speed
b. cloud cover
c. air pressure
d. rainfall
Solved
Show answers
More tips
- F Family and Home Do You Really Need a Playpen for Your Child?...
- F Food and Cooking Do Aphrodisiacs Really Work? Separating Fact from Fiction...
- C Computers and Internet Log-in: what is it and why do you need it?...
- S Style and Beauty Secrets of Tying a Pareo: 5 Ways...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
Answers on questions: Biology
- B Biology The process of converting a liquid into a solid is called condensation evaporation freezing sublimation...
- B Biology What is a common pliocene meh...
- B Biology What happens to shadows at sunrise and sunset? ?...
- B Biology How many nuclei does a prokaryotes cell contain...
- B Biology Twi scientists are cutting samples of leaves for analysis. one scientist always clips a sample from the base of the leaf near the stem, and the other scientists always clips...
- B Biology What is the difference between a horticultural society and an agricultural society?...
- E English Ten instructions on how to adapt in a new envrionment...
- M Mathematics In triangle RG shown below. m 63 and m 30 Which of the following is the 63...
- M Mathematics Writing a two column proof (Assemble the proof by dragging tiles to statements and reasons columns.)...
- B Biology Which is a characteristic of cancer cells? A. Cytokinesis stage is skippedB. Contain multiple genetic change.C. Cell cyclins function normally.D. Controlled cell Division...
Ответ:
Soil formation is most influenced by wind speed.
Thanks for using .
Ответ:
DDT stands for dichloro-diphenyl-trichloroethane. The first kind of synthetic/artificial insecticides came into use in the 1940s. The earlier usage of DDT include: a) Killing of malarial vectors, b) Combatting Typhus and other insect borne human diseases, c) As a pest control in crops d) as a pest control in garden, live stock production and even at homes.
The negative impact of DDT could be felt for the first time when the pests that were earlier killed by use of DDT have now become pesticides resistant. In the 1950s in USA, the regulatory measures were adopted to reduce the usage of DDTs as its effects as a pesticides were no more long significant and also it was creating detrimental physical and psychological impacts on the human and environment.
It was in 1972 that the U.S. Environmental Protection Agency cancelled the order for banning the usage of DDT based on the adverse impact it produced on the environment, human and other life forms. Since then continuous studies are being conducted to analyse the impact of DDTs. In some later years it was established that DDT is the cause of producing tumors in liver.
Some of the common negative impacts produced by DDT as per the U.S. Department of Agriculture :
a) The non destructive nature – DDT can not be destroyed and thus it remains persistent in the atmosphere
b) It attacks the tissues of living organisms especially the animals and humans ( fatty tissue)
c) It can penetrate the atmosphere to deeper extent.
Now as per the current stuation, The use of DDT is controlled and other alternatives of pest control organisms is being deduced. As per the treaty of Stockholm Convention on POPs (Persistent organic pollutants) , usage of DDT for malarial control is justified but it puts a restrictive use of DDT as pesticides in other areas.
Explanation: