Can someone please help me? :(

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains