Animal because the algae and plant would have to have chloroplast and the bacterium does not have a nucleus as it is a prokaryote.
Answer: It's not blocked
https://www.khanacademy.org/science/high-school-biology/hs-human-body-systems/hs-body-structure-and-homeostasis/a/tissues-organs-organ-systems
The circulatory aids with the immune system because they provide white-blood cells to help fight with the diseases or sicknesses.
i think anus hope this helps
Correct: The sun is the center of the solar system. It is mostly gas. It is the most massive object in the solar system.
