I believe the answer is organic compound
The correct answer is second-degree burn.
There are three types of burns based on the severity of damage to the skin:
• First-manifested by red, nonblistered skin
• Second-characterized by blisters and thickening of the skin
• Third-degree-thickness with a white, leathery appearance.
The amount of stuff that an ecosystem
I think the answer should be medulla oblongata or foramen magnum.
The major nerves that leave brain should form a thick cord in the brain stem that called medulla oblongata. Medulla oblongata will pass a big hole in the base of the skull that called foramen magnum. Depends on what part the question asked(bone or tissue), it probably between those two options.
Two genes, BRCA1, located on chromosome 17q21 (5,6), and BRCA2, located on 13q12-13 (7–9), have been shown to predispose to familial breast cancer.