How were the Himalaya and the Hindu Kush Mountains formed?

What structure on the south african coast has a range of 63 km and releases flashes every 30 seconds?

What's a recharge area? a. the part of an aquifer where groundwater meets a lake or stream b. the part of an aquifer where surface water reaches the water table c. the part of an aquifer that's located between two aquicludes d. the part of an aquifer that's located at a lower elevation

Name the country with the highest population in africa?