Shania wanted to see if eating apples would help her do better on her class work, the first day she didn't eat any apples. On day 2, she ate one apple; on day 3 she ate 2 apples; and on day 4 she ate 3 apples. Each day she recorded her grades on her science work. What is the (Independent variable, depended variable, and control)

Can you guys me with this question , and you! : why do you think the breastbone of a bird is so much larger than the breastbone of a cat?

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

Cells destroy body cells infected by a virus or bacteria. killer t t memory t none of the above