Which of the following is true for a eukaryote? It is one of the first life forms to appear on Earth.
It does not have a nucleus and organelles.
It must be a unicellular organism.
It evolved from prokaryotes.

Chalk is an ionic compound. which is a property of all ionic compounds that makes chalkboard? particularly useful for writing on a a high melting point hardness and brittleness inability to dissolve in water a multicolored appearance