What is the definition of plate tectonics?

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

If oil spills continue, all of the following should be expected except (2 points) death of aquatic life. polluted groundwater. decreased soil productivity. increased global temperatures.

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table