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!
Lithosphere would go with Solid Rock.
Outer Core would go with Liquid Iron.
Inner Core would go with Solid Iron.
Asthenosphere would go with Liquid Rock.
Hope I helped!
single-nucleotide polymorphism, I think this might be it. I hope it helps.
Answer:
Cell membranes serve as barriers and gatekeepers. ... Small polar molecules, such as water and ethanol, can also pass through membranes, but they do so more slowly. On the other hand, cell membranes restrict diffusion of highly charged molecules, such as ions, and large molecules, such as sugars and amino acids.
Explanation:
Hope it helps :)
An air mass bringing dry, frigid winds to North Dakota
