Some farmers leave a strip of land around the edge of each field which they do
not spray with chemicals.

Suggest two reasons why this will lead to an increase in the number of partridges
on these farms.

What is the equilibrium constant of aa+bb=cc+dd

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.