GEO- What is the difference between a perennial plant and a annual plant?

Perennial plants are plants that have a live cycle of more than two years or can live for more than two years while annual crops are crop that only last for one years and are replanted every year. Perennial plants are mostly trees while annual plants are mostly crops.

Hope this answer correct :)

i do agree with robert moses’ statements about wiping out cities that are an “impediment to new growth”. in order to have a positive community, the city must continue to grow either in terms of size or economics. therefore wiping out cities that restrict growth benefits the overall society and all the people living in it. similar to a social contract, i believe that if a person was to live in a community they must sacrifice some of their rights, in this case property, for the overall good of the people. as long as these people living in the cities are reimbursed and the purpose of wiping out the cities is to serve the public, there is no problem with robert moses’ core idea.