Write a scientific explanation that describes the impact that the discovery of 40 million-year-old Group B fossils would have on the scientist’s understanding of the fossil record as pictured above.

Based on the formulas, select the compounds below that are covalent: kbr sif4 al2o3 co2 naco3 s7o2 pcl3 fe3n2 h2o s2f10

Which question comparing two different metals is best answered through science? a. which metal is easier to use? b. which metal is harder to find? c. which metal is less dense? d. which metal is more valuable?

Describe two techniques used to measure the ph of a solution