evolúcia (biológia) 2 [vynechat] facts and features 2 [vynechat] fossils 2 [vynechat] fosílie 2 [vynechat] horniny 2 [vynechat] minerals 2 [vynechat] minerály 2 [vynechat] nerasty 2 [vynechat] neživá príroda 2 [vynechat] nonliving nature 2 [vynechat] rocks 2 [vynechat] všeobecnosti a zaujímavosti 2 [vynechat] animals 1 [vynechat] climatic changes 1 [vynechat] damage to environment 1 [vynechat] dejiny civilizácie 1 [vynechat] dejiny poľnohospodárstva 1 [vynechat] energia 1 [vynechat] energy 1 [vynechat] environment 1 [vynechat] evolution (biology) 1 [vynechat] fossil fuels 1 [vynechat] fosílne palivá 1 [vynechat] general knowledge 1 [vynechat] geological history of the Earth 1 [vynechat] geologický vývoj Zeme 1 [vynechat] global problems 1 [vynechat] globalization 1 [vynechat] globalizácia 1 [vynechat] globálne problémy 1 [vynechat]