Please do not ask your doubts in the YouTube comments.
Please go to Unacademy’s website/app using this link and ask your doubts there: https://unacademy.com/lesson/live-right-now-roman-strategy-to-crack-environment-and-ecology/GQOX0IQ8
Download Unacademy Learning App for Android: https://play.google.com/store/apps/details?id=com.unacademyapp&hl=en
source
How many hotspots are there in India. Mention their name also.