Describe an additional test that could be done to confirm that the colour is due to the metal ion

Often on a topographic map, every fifth contour line is darkened. what is this line called? a. key b.slope c.benchmark d. index contour

Which atom or ion is the largest? 0 a. 0 0 0 0 e. li

What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.