Question

BIO 1045 Principles of Biology II Spring 2020 <Ch 29 HW Scientific Skills Exercise: Making Bar Graphs and Interpreting the Data Mineral content in granite microcosms Mineral content in andesite microcosms e a Control Experimental Control Experimental Mean weathered amount (umol) ilm - Mean Weathered amount (umol) - 0 Ma Element Overall, what is the effect of moss on the chemical weathering of rock? Mg Element It is not clear whether or not moss increases the chemical weathering of rock Moss increases the chemical weathering of rock Moss does not increase the chemical weathering of rock

Answer 1

Answer: Moss increases the chemical weathering of rock

Explanation: From the bar graph, it can be observed that in control groups for all elements in both microcosms mean weathered amount (y-axis value) is less as compared to experimental group values. In granite microcosms, for Ca2+, control value is around 1.5 and experimental value is around 2.5. Applying this for all elements in both graphs, it can be concluded that moss increases the chemical weathering of rock.