Which of the following statements is a disadvantage of nonrenewable resources that a scientist could use to defend the need to reduce our dependency on them as an energy source? A. Oil reserves have a limited supply and can be depleted
B. Coal is more efficient at producing electricity than other resources
C. Biomass is more difficult to transform from chemical energy to electrical energy D. Pollution from burning fossil fuels leads to an increase in average global temperatures
E. Windmill farms disrupt habitats and require large areas to sustain adequate energy for communities

layer 3 is younger than layer 6.

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.