Asked/Added Questions From NCERT:

 Edward Jenner

-Answered by Himanshi Verma On 03 February 2019:04:28:16 PM

 The first successful vaccine to be developed, was introduced by Edward Jenner in 1796. He followed up his observation that milkmaids who had previously caught cowpox did not later catch smallpox by showing that inoculated cowpox protected against inoculated smallpox.

-Answered by Himanshi Verma On 24 January 2019:05:13:05 PM

 IR-36 is improved variety of rice.

-Answered by Himanshi Verma On 03 February 2019:04:28:59 PM

 Chluro fluro carbons (CFCs) responsible for ozone depletion.

-Answered by Himanshi Verma On 25 January 2019:05:08:34 PM

 Gonorrhea is a sexually transmitted disease (STD). You get it from having sex with someone who is infected with it. Some people call it “the clap.” Gonorrheausually causes pain and other symptoms in your genital tract, but it can also causeproblems in your rectum, throat, eyes, or joints.

-Answered by Himanshi Verma On 24 January 2019:05:01:51 PM

 Echidna  

-Answered by Himanshi Verma On 24 January 2019:04:58:51 PM

 Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. The total amount of effective halogens(chlorine and bromine) in the stratosphere can be calculated and are known as the equivalent effective stratospheric chlorine (EESC).

-Answered by Himanshi Verma On 24 January 2019:05:03:53 PM

 The water vascular system is a hydraulic system used by echinoderms, such as sea stars and sea urchins, for locomotion, food and waste transportation, and respiration. The system is composed of canals connecting numerous tube feet.

-Answered by Himanshi Verma On 24 January 2019:05:05:09 PM