Three elements are very reactive nonmetals with similar properties. Where are these elements most likely located in the periodic table?
A. in the same row of the periodic table
B. in the four corners of the periodic table
C. in the two top rows of the periodic table
D. in the same column of the periodic table

Plz quick a natural resource that is replaceable through a cycle in nature or sustainable practice is called a? the subject is science

Chronic obstructive pulmonary disease (copd) makes it difficult for the respiratory system to deliver oxygen to the lungs. the scientist wants to use a computer simulation to model how copd affects heart rate and respiratory rate during exercise. she will compare the results of the simulation to the results she gathered in her previous study. which of the following would be an appropriate dependent variable for the new study?

After agricultural soils are picked up and carried by a river, how are they deposited in the river’s del which is not a cause of desertification? a) light grazing b) contour plowing c) conversion of rangelands to crop lands d) high population density