Even in the 21st century, we are still heavily dependent on the conventional sources of energy and not on the cleaner alternate sources. Elaborate

According to the earth science reference tables, during which geologic time period were the continents of north america,south america, and africa closest together?

Match your vocabulary word to its definition. 1. emigration 2. immigration 3. migration 4. overpopulation 5. sustainable development 6. under population 7. unsustainable development 8. urbanization the movement from one place to another the number of people exceeds the available natural resources in an area leaving one's homeland to settle in a new place the increase in the population of a city the movement of people to a new country the ability to meet current needs without reducing the ability to meet future needs resources being used up at a faster rate than they can be replenished birth rate insufficient to replace the existing population

Migrant workers who fill employment needs in their host country often send remittances to their home countries