Classify the following elements as alkali, alkaline-earth, or transition metals,
iron
potassium
strontonium
plantinum

In a world that produces enough food for every human, why is the distribution of food consumption and production so unequal? in a few sentences, explain why production and consumption of food is lower in the least-development countries (ldcs).

The lines marked by the letters a, b, and c on the map above represent a. chains of volcanoes b. earthquake fault lines c. thin strips of heavy forests d. major rivers that flow from north to south

How many time zone are there on earth