An element that is malleable and a good conductor of heat and electricity could have an atomic number
a. 16
b. 18
c. 29
d. 35

If this sedimentary rock layer is truly the oldest one of marine origin, what do you think that tells usabout the formation of earth's oceans?

At what temperature will a solid melt ?

Aconversion factor is a ratio of equivalent values used to express the same units in different quantities