Answer:
D The atrioventricular valve works as a rigid door to prevent water from escaping from the top.
Explanation:
the question is incomplete, but I annex the options and their explanation
When you compress the heart in this demo, why does the water leave the artery?
A It's like squeezing a sponge
B The arterial valve draws water from the ventricle.
C The atrioventricular valve has parachute-shaped fins to prevent water from escaping from the top.
D The atrioventricular valve works as a rigid door to prevent water from escaping from the top.
the atrioventricular valve during the contraction process closes at the top, thus avoiding the leakage of the liquid and leaving the artery that opens due to the force exerted by the volume and force of the ventricle.
Use of fertilizers and pesticides — it pollutes fertile soil with toxic chemicals. Fossil Fuel combustion — it releases greenhouse gases into the air. Deforestation— It makes soil more vulnerable. I hope I helped you :)
The functional groups determine the shapes of macromolecules and this in turn determines their functions
Answer:
Hydrogen Bonding in Water (1) The hydrogen bond in water is a dynamic attraction between neighboring water molecules involving one hydrogen atom located between the two oxygen atoms.
Explanation:
