Ecosystems 3º ESO

Match it! Select the correct answer from the pull down...Good luck!

The major reservoir for phosphorus is

Which of the following is a secondary consumer?

Which of the following does not contribute to the species diversity of the tropics?

Which is a more accurate way of dating rocks, absolute or relative dating?

On average, for a crop plant to produce one kilogram of food it requires how many kilograms of water?

What is happening to the amount of carbon dioxide in the atmosphere?

Which of the following is not a problem with ground water?

Which of the following contains a lot of carbon?