Avariety of different mechanisms in nature create diversity in organism populations. the tundra found in the northernmost parts of the planet is the world’s youngest biome. the tundra is home to a variety of plants and animals. organisms that can be found in the tundra include shrubs, mosses, caribou, polar bears, and wolves. which mechanism do the different organism populations found across the tundra exemplify?

1. genetic diversity
2. ecosystem diversity
3. species diversity
4. variation

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area

Up until 1938, paleontologists accepted the idea that coelacanths (an ancient fish) went extinct at the time that they last appear in the fossil record, about 80 million years ago. but in 1938, a live coelacanth was discovered off the coast of south africa that was compared to the fossil record and found to be the same species what goal of science does this discovery represent