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The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal. b. he is determining chemical properties that are sufficient to identify the metal. c. he is determining physical properties that are insufficient to identify the metal. d. he is determining chemical properties that are insufficient to identify the metal.

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by