Which of the following did not cause the reduction in sulfur dioxide emissions from sudbury's smelters? a) improving emission-control technology b) passing regulations requiring reductions in sulfur dioxide emissions c) permanently closing the nickel mines d) building the inco superstack

Answer the scientific method question

Which of these are characteristics of a scientific law? check all that apply. it contains an explanation of facts. it states a fact about how nature works. it is based on observations of nature. it often changes over time with new experiments and technology. it explains why a group of hypotheses are related. it will most likely remain true even when scientists work with new experiments.

Match each standard for evaluating sources with its description. trustworthiness relevance authority currency the text gives information related to your topic. the issue is addressed from a balanced and fair viewpoint. the information is up-to-date. the writer of the text has experience or expertise on the topic.