The heart is one of the first parts of the embryo to develop. what part of the stem cell provides instructions for building the heart?
a. lysosomes
b. rer
c. ribosomes
d. dna

the correct option is option a

idk

explanation:

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

light dependent reactions:

light independent reactions:

hope this !