What do Mercury (Hg), Gallium (Ga) and Bromaine (Br) have in common?

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles

Word equation for k+ h2o yield koh + h2