What is the species name for modern man??

The Law of the Sea permits each coastal state to claim an exclusive economic zone that extends ________ nautical miles from shore

A) 3 B) 12 C) 100 D) 200

Small particles of ordinary table salt are hygroscopic. What does hygroscopic mean and what is a likely natural source of salt particles?

Ozone is a constituent of the ________, where it protects life from ultraviolet radiation from the sun

Fill in the blank(s) with correct word

What region borders the Sahara Desert, has highly variable rainfall and a human population dependent on pastoralism?

A) West Africa B) East Africa C) Horn of Africa D) Central Africa E) Sahel