The cause of decline in the population of reptiles and birds is

  • A
    $DDT$
  • B
    Biofertilizer
  • C
    Bioinsecticides
  • D
    Sewage

Explore More

Similar Questions

In plants,air pollution causes

The figure below shows the effect of sewage discharge on some important characteristics of a river. What are $P$ and $Q$?

$PAN$ $(Peroxyacetyl \text{ nitrate})$ is an important constituent of photochemical smog. It is a

$.........$ is an undesirable,high-intensity sound.

Photochemical smog always contains

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo