Answer: A) archaea and bacteria
Explanation:
Astronomer Edwin Hubble classified galaxies<span> into four major types: spiral, barred spiral, elliptical and irregular. Most of the nearby, bright </span>galaxies<span> are spirals, barred spirals or ellipticals. Spiral </span>galaxies<span> have a bulge at the center and a flattened disk containing spiral arms.</span>
The tricuspid valve shuts. This prevents blood from flowing backward into the right atrium while the ventricle contracts. So, your answer will be the Tricuslid Valve. Hope I helped!
False. It shows the DNA of someone.
