Chemical weathering and mechanical weathering can be influenced by plants. Plants contribute to mechanical weathering when their roots growth through cracks and crevasses in soil or rock. Overtime the roots will break rocks apart. Some plants produce and secrete organic acids that can change the chemical composition of rocks causing them to weather. Mechanical weathering breaks rocks into smaller pieces while chemical weathering changes the composition of the rocks.
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Explanation: The United States of America and Canada have one of the worlds oldest environmental partnerships. The various ways they're partnering to better the environment include:
1. The U.S. - Canada Air Quality Agreement.
This Agreement was signed in 1991 with the aim of working towards the reduction of air emissions which cause cause acid rain. The Agreement was later expanded in the year 2000 with the goal of reducing transboundary smog emissions under the Ozone Annex.
2. The Great Lakes Water Quality Agreement.
This Agreement was initially signed in 1972, and amended in 2012. The goal of the Agreement is to provide a mechanism that involves the effort and cooperation of both countries, that will be geared toward the protection of the Great Lakes Basin ecosystem.
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The role of pricing on customer satisfaction has been largely ignored, however hospitality services are, for the most part produced by humans, and consequently, no two guest stays will be precisely alike.
However researches have been carried out suggesting that the variability in performance across different consumption experiences leads to increased uncertainty, and thus to decreased reliance on prior expectations, in such situation consumers tend to use price as a cue of performance expectations. Which makes it difficult to know customer satisfaction.
Meaning the relationship between the level of service and the price of hotel room is uncertain because know two human is alike.
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