Why is it difficult to establish a society on an island?

Venezuela’s economy relies most heavily on which of the followingvenezuela’s economy relies most heavily on which of the following? a. oil reserves in places such as the eastern llanos b. cattle ranching in the grasslands c. fertile farmland in the andean highlands d. coffee plantations in mountainous areas

Based on current rates the earths human population is expected to grow how much by 2050

How are the arctic and antarctic circles alike?