How understanding of the periodicity and groupings is useful: Explain the interaction of the group or chemical element you have highlighted with a moral, ethical, social, economic, political, cultural or environmental factor as a result of its use.

Choose one factor ~ and one group or element~

Which element is the least metallic between cadmium, silver, zinc, or iron?

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?