If its a heart its circulatory, lungs respiratory, kidneys excretory, brain nervous, stomach digestive, hormones endocrine, skin integumentary, lymph nodes lymphatic, bone skeletal, muscle muscular, thymus immune system.
But if you can show a pic i could try to answer it more specifically.
<span>Carl Linnaeus was born May 13th, 1707 and died January 10th 1778 aged 70 he was a Swedish botanist which means he performed scientific studies of plants, [ he was also a physician also known as a medical practitioner or medical doctor and a zoologist which is the study of animals. He also started the scheme of nomenclature which is the naming of species of animals and plants; he is also known as the "father of modern taxonomy" taxonomy sometimes alpha taxonomy meaning the science of finding, describing and categorising organisms </span>
Night blindness is caused by vitamin A
