National parks can be a double-edged sword because it often costs too much to visit them the crowds of people that are attracted can disrupt the ecosystem the parks are not necessarily interesting they do not generate any revenue

the crowds of people that are attracted can disrupt the ecosystem.

National parks can be a double-edged sword because the people that come visit them can often disrupt the ecosystem. This defeats the original purpose, as national parks are established in order to protect the ecosystem from the damage of humans. However, some measures can be taken in order to reduce the damage. For example, crowds can be reduced by introducing daily limits, or increasing the price of tickets. Security can be increased in order to monitor the crowds. Finally, reminding the crowds of the fragility of the parks can sometimes improve the people's behaviour.

the federal government of the united states was established by the constitution. us is a presidential republic. the president is head of state, head of government and of a two party legislative and electoral system. the supreme court balances the powers of the federal and the state government. yhe executive branch is headed by the oresident. there are two chambers of congress, the senate and the house of representatives. judicial power is exercised by the judicial branch (or judiciary), comprised of the supreme court and lower federal courts. the judiciary's function is to interpret the   constitution as well as the federal laws and regulations.