When the classrooms are divided into ability levels, type of preparation or according to future plans, it is called tracking. Tracking is a system where in, the school's population is divided and assigned to their respective capabilities or their achievements.
<u>greenhouse</u> gases trap heat within the earth’s atmosphere, contributing to a gradual but persistent global warming pattern.
In particular, greenhouses gases such as carbon dioxide and methane gas.
The Federal Reserve System has a two-part structure: a central authority called the Board of Governors in Washington, D.C., and a decentralized network of 12 Federal Reserve Banks located throughout the country.
San Juan is the capitol of Puerto Rico. Castillo San Felipe del Morro is the fort in San Juan. I am from puerto rico so :)