Prokaryotic - cells that don’t contain a nucleus, for example bacteria cells
Eukaryotic - cells that contain a nucleus, for example plant and animal cells
The correct answer is B. Oxygen.
Oxygen, as a part of the atmosphere, also participates in UV protection, besides being necessary for breathing.
Answer:
1. it's an atom
Explanation:
An atom is the smallest particle of an element, having the same chemical properties as the bulk element. The first accurate theory explaining the nature of matter was Dalton's Atomic Theory: 1. All matter is composed of atoms, and atoms are indivisible and indestructible.
Decreased blood flow due to limiting the amount of blood
