Tion 3 4 5
6
Which of the following is a correct statement?
The form of carbon found in the atmosphere is call
O
O Life as we know it could exist on Earth without carb
O
The carbon cycle is not essential to the biosphere.
O The greenhouse effect is not related to carbon in th

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.