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Amphibian populations are declining due to multiple threats, but are not threatened by overhunting.
Q19: Ecological footprint models have been used since
Q20: Which factor is a major contributor to
Q26: Some animals living in tropical rainforests have
Q35: An example of a detritus feeder is
Q41: How has the human population avoided dramatic
Q54: Pure water has a pH of 7,
Q55: Sustainable yield is the highest rate at
Q58: Despite significant efforts to protect biodiversity, Costa
Q82: Government subsidies can actually encourage companies to
Q89: Narrative: (questions 9 and 10) A tiny,