The chemical bond in which electrons are shared

Which of the following is a consequence of urban heat islands? increased precipitation downwind of the city? increased precipitation upwind of the city? decreased winds within the city? increased winds within the city?

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen