They shouldn't take aspirin or aspirin containing substances
Oceanography. Geology. Astronomy. Meteorology.
Herbivores. The eat directly from the producers. 10% of the producer's energy goes to herbivores, while only 10% of the 10% energy the herbivores had goes to carnivores.
Answer:
Destruction of habitats, Introduction of non-native species, pollutions, and the over harvesting of species.
