The kingdom that includes both unicellular and multicellular organisms is Protista.
Characteristics such as appearance, reproduction, mobility, and functionality are just a few ways in which living organisms are grouped together. These specialized groups are collectively called the classification of living things.
The abdominal cavity does not have a bony protection. The abdominal cavity is barely an unfilled space. It comprises a quantity of critical body organs containing the subordinate portion of the esophagus, the stomach, the small intestine, the colon, the rectum, the liver, the gall bladder, pancreas, spleen, kidneys, and bladder.
I want to say the Answer is Polarity Or Hydrogen Bond
An ectoderm gives rise to hair, skin, nails or hooves, and the lens of the eye.
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