Which best describes how the oxygen molecules will move? a. oxygen will move from an area of higher concentration (inside the cell) to an area of lower concentration (outside the cell). b. oxygen will move from an area of lower concentration (outside the cell) to an area of higher concentration (inside the cell). c. oxygen will move from an area of lower concentration (inside the cell) to an area of higher concentration (outside the cell). d. oxygen will diffuse from an area of higher concentration (outside the cell) to an area of lower concentration (inside the cell).

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

What is the main difference between the central nervous system (cns) and the peripheral nervous system (pns)? .the cns involves the brain and spinal cord, and the pns involves the body nerves. the cns involves the body nerves, and the pns involves the brain and spinal cord. the cns involves sensory neurons, and the pns involves motor neurons. the cns involves motor neurons, and the pns involves sensory neurons.

The offspring of a black cat and a white cat is a gray cat, it has the genotype bw if a black cat mates with a gray cat the chance that the offspring is white will be what percent?