Population Density | Organisms and Populations | Biology | Khan Academy

In this video, we talk about population density and how difficult it can get to estimate sometimes. We find out how to count tiger populations and that population density isn't always about the number of individuals in the area. Timestamps: 00:00 - What is population density? 01:46 - Purpose of population density 02:49 - How to count tigers? 04:58 - Biomass density as an alternative 07:27 - Summary Practice this concept: https://www.khanacademy.org/science/i... Master the concept of Organisms and their Environments through practice exercises and videos: https://www.khanacademy.org/science/i... Check out more videos and exercises on Organisms and Populations: https://www.khanacademy.org/science/i... To get you fully ready for your exam and help you fall in love with biology, find the complete bank of exercises and videos for Class 12 Biology here: https://www.khanacademy.org/science/i... Khan Academy is a free learning platform for Class 1-12 students with videos, exercises, and tests for maths, science, and more subjects. Our content is aligned to CBSE syllabus and available in Hindi, English, and many more regional languages. Experience the joy of easy, seamless, accessible learning anywhere, anytime with Khan Academy! Subscribe to our YouTube channel:    / khanacademy   As a 501(c)(3) nonprofit organization, we would love your help! Donate here: https://www.khanacademy.org/donate?ut... Created by Sulagna Das