The world's population: is equally distributed will triple by 2050 is unevenly distributed is mostly concentrated in agricultural areas

The world’s population consists of an estimate of 7 billion, and although it has been increasing each year, it is unevenly distributed. Large cities, in countries like China, India and United States, have the world’s largest population density, that is the number of people per square kilometer. Meanwhile, in rural areas, population density is significantly lower. To this year, the most populated country is China.

b) a state law could be declared illegal if it contradicted the constitution.

explanation:

the conflict of this case originated when james w. mcculloch, a cashier of the baltimore branch of the second bank of the united states that the congress had chartered in 1816, refused to pay a tax imposed by the maryland state.

in the case, the state of maryland appealed that the establishment of a second bank was unconstitutional since the constitution didn't say anything about granting that power to congress. however, the case determined that even if such right wasn't specifically stated in the constitution, it was part of the "implied powers" of the government enunciated in article i, section 8.

the case also eliminated maryland's legislation to impose taxes to a national bank, asserting that even though the states retained the power of taxation, the constitution's laws are supreme and can not be controlled by the states, therefore, if a state law contradicts the constitution, it should be declared illegal.

explanation: