Which of the following are true?
i. the greenhouse effect and global warming are the same thing.
ii. without the greenhouse effect there would be no life on earth.
iii. some of the radiation flowing from the earth to space is absorbed by greenhouse gasses and re-radiated back to the surface and out to space.
iv. co2 makes up about 96% of mars atmosphere

Which of the following statements does not describe the raccoon dog

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

The creation of the trans-siberian railway allowed people to travel across russia. how could this railway impact russian culture?