Notice: Payments for answers will end 4/10/2017. Click for more info.
You have new items in your feed. Click to view.
Question and answer
Q: Two economic importance of tick,rat, grain weevil
A: Rodents are of major economic importance, primarily as consumers of the grains that are the basic foodstuff for man. It has been estimated that rats and mice destroy up to one-third of grain crops under conditions of heavy infestation. [ Burrowing rodents may damage root crops. The muskrat (Ondatra zibethica) and nutria (Myocastor coypus), introduced into Europe as fur sources, have escaped and
spread over much of Europe between the Baltic and the Alps. Their burrows, particularly in canal banks, have been a major source of damage to the drainage system, most especially in The Netherlands. A number of rodents serve as reservoirs for human diseases, such as bubonic plague, tularemia, scrub typhus, and others. The plague that ravaged Europe during the mid-14th century was transmitted by fleas from rats to humans. In view of their life history, weevils are of considerable economic importance, particularly in relation to agriculture. No part of a plant, from the roots to the seeds, is safe from the attacks of one or more species of weevil. Although it is mainly the larval stages that cause the most damage, the adults too can be quite destructive. Some species, such as the grain weevil (Sitophilus granarius), are serious pests of stored grains. Others, such as the cotton boll weevils (Anthonomus barbirostris), are responsible for widescale destruction of stored cotton in the United States, into which it was introduced in the 1890s from Latin America. Read more: Weevils - Species, Plant, Insects, and Rostrum - JRank Articles ]
brend|Points 50|
Question
Asked 11/8/2012 2:20:14 PM
0 Answers/Comments
Get an answer
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
26,920,015 questions answered
*
Get answers from Weegy and a team of really smart lives experts.
Popular Conversations
Which is not a responsibility of the president
5/18/2018 10:17:31 PM| 2 Answers
Adverb clauses modify __________.
Weegy: An adverb clause is a dependent clause that acts as an adverb. User: Which sentence correctly forms the ...
5/19/2018 2:53:57 PM| 2 Answers
After the skin is cut and a capillary wall breaks, what's the first ...
Weegy: After the skin is cut and a capillary wall breaks, the first step in working to form a clot is - Platelets clump ...
5/23/2018 5:14:16 PM| 2 Answers
Locate the complete gerund or infinitive phrase and identify its use. ...
Weegy: A gerund is a verbal that ends in -ing and functions as a noun.
5/20/2018 3:24:04 PM| 2 Answers
What does velocity mean
5/23/2018 7:13:12 PM| 2 Answers
Phototropism
Weegy: Geotropism is the growth response of a plant in response to gravity. User: Which type of plant was the last to ...
5/16/2018 8:45:28 AM| 2 Answers
2. Which of the following is not an example of a nontraditional ...
Weegy: Law firm is not an example of a nontraditional health information technology setting. User: 3. Good coding ...
5/16/2018 10:46:59 AM| 2 Answers
Given the formula E = IR what is the formula for R? A. ...
Weegy: Given the formula E = IR, the formula for R is R = E/I. User: Solve this equation: 80 = 3y + 2y + 4 + 1. ...
5/16/2018 11:47:29 AM| 2 Answers
S
L
Points 226 [Total 237] Ratings 0 Comments 226 Invitations 0 Offline
S
R
L
R
P
R
Points 216 [Total 658] Ratings 0 Comments 26 Invitations 19 Offline
S
L
Points 130 [Total 130] Ratings 0 Comments 20 Invitations 11 Offline
S
1
L
L
P
R
P
L
P
P
R
P
R
P
R
P
Points 124 [Total 13209] Ratings 0 Comments 114 Invitations 1 Offline
S
Points 30 [Total 30] Ratings 0 Comments 0 Invitations 3 Offline
S
Points 14 [Total 14] Ratings 0 Comments 14 Invitations 0 Offline
S
Points 13 [Total 13] Ratings 0 Comments 3 Invitations 1 Offline
S
Points 13 [Total 13] Ratings 0 Comments 13 Invitations 0 Offline
S
Points 11 [Total 11] Ratings 1 Comments 1 Invitations 0 Offline
S
L
1
R
Points 11 [Total 1416] Ratings 0 Comments 1 Invitations 1 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.