características sociales, económicas, religiosas, salud, educación, políticas y obras emblemáticas. durante los gobiernos septenio de Antonio Guzmán blanco​

Based on this map, which statement about africa’s economic activity is most accurate? a) coastal countries are all members of opec b) economic development is more common with opec nations c) coastal countries have more access to productive resources d) economic development is more common above the sahara desert

Geologists know that potassium-40 decays to argon-40, with a half-life of 1.3 billion years. if an analysis of a feldspar crystal in a sample of granite shows that 75 percent of the potassium-40 atoms have decayed to form argon-40, what is the age of the granite

Plzz on what physical process is responsible for the creation of volcanoes, earthquakes and ocean trenches at the plate margins?