Explain why an action such as cleaning up the garbage in a park is not a sustainable action on its own. What else is needed along with such an action to make it sustainable?

Most countries in the middle east must import a majority of their a. gasoline b. oil c. food d. water

Lines of longitude are like stripes from the top of the globe down to the bottom virtually slicing the earth like an orange

Can someone me choose a broad topic and area of focus i am really doing this as a tally to see which one most people pick ok water pollution global warming endangered species atmosphere for the !