Type the correct answer in the box. Use numerals instead of words. A population of beetles increases by 5% every year. If at the start of the year the population is at 10,000 beetles, what will its population be after three years? At the end of the third year the population of beetles will be .

Which of the following is true about the introduction of a non-native species to an environment? (a) they usually adapt quickly so they can have a positive affect on the environment. (b) they can disrupt the environment and cause much damage and devastation to native species. (c) they usually become predators in a food chain and to keep prey populations under control. (d) because the native species are better-adapted to the environment, the non-native species always end up dying out.