11. Nimeta üks ökosüsteem. Kirjelda seal elavaid kooslusi ja populatsioone.
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12. Mille kaudu saad iseloomustada organismidevahelisi toitumissuhteid?
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13. Koosta üks neljaastmeline toiduahel.
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14. Kuidas sõltub ökoloogiline tasakaal liigilisest mitmekesisusest?
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15. Miks peab kaitsma taime- ja
loomaliike? Kuidas seda teha saab? .................................................................................... .................................................................................... .................................................................................... .................................................................................... .................................................................................... .................................................................................... .................................................................................... |
