When moving upward on an energy pyramid from one level to the next, what happens to the usable energy in an
ecosystem?
It increases by about 10%
It increases by about 90%
It decreases by about 10%
It decreases by about 90%

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? (2 points) decreasing temperature decreasing pressure decreasing surface area decreasing solute concentration

Which of the following compounds would be expected to have the strongest ionic bonds? a)the compound that has b)the largest ions with the greatest charge c)the compound that has d)the largest ions with the least charge the compound that has the smallest ions with the greatest charge the compound that has the smallest ions with the least charge

Select the correct lewis structure for fluorine which is group 7a element?