2. The endosymbiotic theory suggests that a eukaryotic cell is the result of one prokaryotic cell eating another.
Answer:
Alveoli
Explanation:
The smallest branches are called bronchioles and at the end of these are your air sacs (alveoli).
It would b B.physically because solution is a mixture and mixture is formed by physical change not by chemical
Answer/Explanation:
Most of the mass is contained in the nucleus
The atom can be divided into two main regions, the nucleus. and the electron clouds. The nucleus is home to neutrons and protons, which are the heavier subatomic particles. The mass of an atom, the atomic mass, is the sum of the number of neutrons and protons contained within the atom. The electron cloud is the region where the electrons of the atom are found.