Tp Which important step should you take before you design your experiment, to find out if someone else has asked the same question before, and to get more information?
O A. Test
OB. Research
O C. Hypothesize
OD. Observe

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.