Chemical fertilizers and pesticides

-

Chemical fertilizers and pesticides: Chemical fertilizers and pesticides are used by farmers to protect crops from insects and bacterias. They are useful for the plants growth. However, when these chemicals are mixed up with water produce harmful for plants and animals. Also,when it rains, the chemicals mixes up with rainwater and flow down into rivers and canals which pose serious damages for aquatic animals.

Comments

Post a Comment

Popular posts from this blog

Information technology

-
Image
Information technology  ( IT ) is the application of  computers  to store, study, retrieve, transmit, and manipulate  data , [1]  or  information , often in the context of a business or other enterprise. [2]  IT is considered a subset of  information and communications technology  (ICT). In 2012, Zuppo proposed an ICT hierarchy where each hierarchy level "contain[s] some degree of commonality in that they are related to technologies that facilitate the transfer of information and various types of electronically mediated communications." [3] The term is commonly used as a  synonym  for computers and computer networks, but it also encompasses other  information  distribution technologies such as television and telephones. Several  industries  are associated with information technology, including  computer hardware ,  software ,  electronics ,  semiconductors ,  internet ,  telecom ...
Read more

ISOTOPE

-
Image
This article is about the atomic variants of chemical elements. For other uses, see Isotope (disambiguation) . Nuclear physics Nucleus   · Nucleons  ( p , n )  · Nuclear force   · Nuclear structure   · Nuclear reaction Nuclear models and stability [show] Nuclides ' classification [hide] Isotopes – equal Z Isobars – equal A Isotones – equal N Isodiaphers – equal N  −  Z       Isomers – equal all the above Mirror nuclei  – Z ↔ N Stable   · Magic   · Even/odd   · Halo Radioactive decay [show] Nuclear fission [show] Capturing processes [show] High energy processes [show] Nucleosynthesis topics [show] Scientists [show] v t e The three naturally-occurring isotopes of hydrogen . The fact that each isotope has one proton makes them all variants of hydrogen : the identity of the isotop...
Read more

Mental Ability Test

-
Mental Ability Test Part – I Questions ¼1–5½ Directions : In each question there is a number series with one term missing shown by question mark (?). This term is one of the alternatives among the four numbers given under it. That number is– 1. 8, 7, 16, 5, 32, 3, 64, 1, 128, (?) (1) 18 (2) 13 (3) –1 (4) 3 Ans. [3] Sol. Combination of two series 8, 16, 32, 64, 128, 7, 5, 3, 1, ? ∴ ? = – 1 2. 16, 33, 65, 131, (?), 523 (1) 261 (2) 521 (3) 613 (4) 721 Ans. [1] Sol. Rule : ×2 + 1, ×2 – 1, ×2 + 1, ×2 – 1 IInd term IIIrd term IVth term Vth term ∴ 16 × 2 + 1 = 33 33 × 2 – 1 = 65 65 × 2 + 1 = 131 131 × 2 – 1= 261 3. 5, 2, 17, 4, (?), 6, 47, 8, 65 (1) 29 (2) 30 (3) 31 (4) 32 Ans. [3] Sol. Series consists two rules Ist is 2, 4, 6, 8, .... IInd is 5 + 12 = 17 17 + 14 = 31 31 + 16 = 47 47 + 18 = 65 4. 1, 2, 4, 8, (?), 32 (1) 10 (2) 12 (3) 14 (4) 16 Ans. [4] Sol. Series is 20, 21, 22, 23, 24, 25 ∴ 24 = 16 5. 2, 3, 10, 15, 26, (?) (1) 36 (2) 35 (3) 39 (4) 48 An...
Read more