Salts are covalent compounds.
O
A. True
O
B. False

No as they are a metal and a non-metal joined together so are bonded ionically and are therefore a simple ionic structure.

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".