2. Write down the position of alkaline earth metal in the Modern periodic table What is their valency?

The electromagnetic force acts between what

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.