Ineed ! plato

it is predicted that the population of a country is going to increase in next two decades. what might be one result of the population increase?

a.

drinking water will be readily available.

b.

basic needs, such as food and water, will be scarce.

c.

food insecurity will decrease.

d.

more farmland will become available per person.

Answer: B.  Basic needs, such as food and water, will be scarce.

As the population increases, the resources necessary to feed the additional persons will also increase. However, basic resources such as food and water are not unlimited. Some countries have more and some less.

Thus, the amount of available drinking water will decrease as well as the available farmland. Due to more mouths to feed, food insecurity will increase as it is uncertain if it is possible to adequately feed the new population.

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

a physical change is being made.