Class 12 Biology Environmental Issues Pollution

Medium

What are the effects of high concentrations of $DDT$ on birds?

A
It disturbs calcium metabolism in birds.
B
It causes thinning of eggshells.
C
It leads to premature breaking of eggshells.
D
All of the above.

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Biology Questions

Chapter

Environmental Issues

Subtopic

Pollution

Similar Questions

The addition of elements like nitrogen and phosphorus to a lake through streams leads to:

Medium

Which of the following is associated with biomagnification?

Easy

Brewery and sugar factory waste alters the quality of a water body by increasing

Medium

The greatest air pollution disaster of the last few decades was observed in

Easy

The population of birds and reptiles is declining due to $.......$.

Medium

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.

For Institutes

Online Exam Module

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