Chinese tallow trees were introduced to the southern United States as an ornamental tree, but they were later found to be an invasive species. These trees grow tall and block light for shorter plant species. Their fallen leaves also release toxins into the soil that disrupt the growth of other plants. The tree can sprout from its roots, so cut trees regrow and spread quickly, overtaking native plant life. Which of the following are most likely to be effective interventions to control the spread of invasive Chinese tallow trees?
1) Infest the trees with flea beetles that eat the roots and leaves.
2) Hang bird feeders in tallow trees to attract birds who eat the tree's fruit.
3) Cut the trees down, so they are not so tall.
4) Educate the public to not purchase or plant the trees.