Distance between two longitude at an interval of 1° is 111km at the equator At the poles the distance between the two longitude is 0 km as they converge at the pole

Both of these Statements are right, isn't it?

yes i do have a lot opinions on black holes

Explanation:

if you do have more interest on black holes then pls read the book THE BLACK HOLES by stephen hawkings. pls read this book.

When a lake, river or other aquatic  system  becomes  eutrophic, it can have serious negative effects on other organisms like fish, birds and even people.if an algal bloom is so bad that it causes wide-spread death  in  the  water, the organisms that die will all sink to the bottom and start to decompose.

The area of the indian subcontinent is 4.4 million km^2 whereas the usa is  9.8 million  km²