2 points 4. A SCIENTIST CONDUCTS AN EXPERIMENT AND DISCOVERS
SOMETHING NEW. IF HIS RESULTS WERE VALID, WHAT SHOULD OTHER
SCIENTISTS DO TO CONFIRM HIS RESULTS? *
A. REPEAT THE SAME EXPERIMENT WITH A DIFFERENT VARIABLE
B. PERFORM THE SAME EXPERIMENT UNDER DIFFERENT CONDITIONS AND OBTAIN
THE SAME RESULTS.
O C. REPEAT THE SAME EXPERIMENT AND OBTAIN THE SAME RESULTS
D. AGREE WITH HIM BECAUSE HE IS A SCIENTIST

The body is protected against harmful flu viruses by

What the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a

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