I think the correct answer would be the left atrium. Mitral valve stenosis is the narrowing of the mitral valve in the heart. This valve does not properly open which blocks the flow of blood into the left atrium. Hope this answers the question.
Salt from the roadways can harm organisms such as plants by putting them in a hypertonic environment. Salt attracts water because it is a solute and can dehydrate the plants
The cell membrane in humans and animals behaves most like the second option. A police officer who allows select people to enter and leave a crime scene. The cell membrane allows particles through to the cell that are vital for the cell to function, while keeping out unwanted substances.
If you have any more questions about my answer, just send me a quick message! I'll be glad to help :)
Have a great day!
He was unable to explain the genetic basis for variation in a population.
