Question: Which human activity is most harmful to the natural environment?
Answer: cutting down a rain forest
Hypothesis: humans cutting down a rainforest causes harm to much of the environment
Supporting facts: sent1: removing a forest means cutting down a forest sent2: harming an environment causes harm to the living things / to the organisms in that environment sent3: cutting down trees in a forest causes the number of trees to decrease in that forest sent4: destroying a forest means cutting down the trees in that forest sent5: rainforests contain many species sent6: a forest is a kind of environment sent7: to keep something occurring means to cause that something to occur sent8: organisms are a part of an environment sent9: destroying animal habitats has a negative impact on an ecosystem sent10: species means a group of a certain kind of organism sent11: a rainforest is a kind of forest sent12: to cut down a rainforest means to cut down trees in a rainforest sent13: humans discarding waste in an environment causes harm to that environment sent14: nature means a natural environment sent15: removing forests means removing animal habitats sent16: destroying something causes harm to that something sent17: humans changing animal habitats usually causes harm to those animals sent18: a decrease of something is a kind of change sent19: deforestation is the process of cutting down trees sent20: rain causes erosion sent21: if a habitat is removed then that habitat is destroyed sent22: clearing a forest means humans cutting down the trees sent23: humans changing an environment sometimes causes that environment to be destroyed sent24: clearing a forest is similar to deforestation sent25: removing a forest means cutting down the trees in that forest
Reasoning: [BECAUSE] a rainforest is a kind of forest [AND] cutting down trees in a forest causes the number of trees to decrease in that forest [INFER] int1: cutting down trees in a rainforest causes the number of trees to decrease in that rainforest [BECAUSE] int1 [AND] a decrease of something is a kind of change [INFER] int2: cutting down trees in a  rainforest changes that rainforest [BECAUSE] a rainforest is a kind of forest [AND] a forest is a kind of environment [INFER] int3: a rain forest is a kind of environment [BECAUSE] int2 [AND] int3 [AND] humans changing an environment sometimes causes that environment to be destroyed [INFER] int4: humans cutting down trees in a rainforest can cause that rainforest to be destroyed [BECAUSE] int4 [AND] destroying something causes harm to that something [INFER] int5: humans cutting down trees in a rainforest causes harm to that rainforest [BECAUSE] int5 [AND] harming an environment causes harm to the living things / to the organisms in that environment [INFER] int6: humans cutting down trees in a rainforest causes harm to the organisms in that rainforest [BECAUSE] species means a group of a certain kind of organism [AND] rainforests contain many species [INFER] int7: rainforests contain many kinds of organisms [BECAUSE] int6 [AND] int7 [INFER] int8: humans cutting down trees in a rainforest causes harm to many kinds of organisms [BECAUSE] int8 [AND] organisms are a part of an environment [INFER] int9: humans cutting down trees in a rainforest causes harm to much of the environment [BECAUSE] int9 [AND] to cut down a rainforest means to cut down trees in a rainforest [INFER] int10: humans cutting down a rainforest causes harm to much of the environment