instruction:
Generate an overlapping word between the given two sentences. When you find the overlapping words, they don't have to match exactly, e.g., "survival" and "survive" are valid overlapping words. Little words like "the" or "of" don't count! You must generate significant words which are not the stop words.
question:
Sentence1: Water is essential for all life on Earth. 
Sentence2: H2O is needed for all life on Eartth.
answer:
Earth


question:
Sentence1: if soil is permeable then water easily flows through that soil. 
Sentence2: The increase in permeability is caused by the formation and expansion of ice in the soil.
answer:
permeable


question:
Sentence1: Environments reflect native habitats. 
Sentence2: conserving resources has a positive impact on native habitats.
answer:

habitats