What should all specimen drawings be done with?

a sharp pencil line on white unlined paper.

Explanation:

Drawing is a very important skill in biology and is considered a type of data collection because drawings help to record data from specimens. Drawings can highlight the important features of a specimen. A drawing is the result of a long period of observation at different depths of focus and at different magnifications.

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called