What happens to a river that’s is blocked from a landslide?
A. It creates a lake and causes the river behind the landslide to flood the land
B. It creates a crater that absorbs all the water
C. Landslides don’t happen near rivers
D. It only floods for a little while

Ithink it’s 3 as the answer.

Particle exchange energy though elastic collision , hope this .

Hbr dissociates to form h+ and br-ca(oh)2 dissociates to form ca2+ and 2oh-the h+ and oh- react to form waterassuming the reactants are dissolved in water, the net reaction is h+ + oh- —> h2oif you’re asked to show all components of the reaction, the complete reaction is 2hbr + ca(oh)2 —> cabr2 + 2h2o

What are the options? physical property can be color, smell, opacity, viscosity, density, infra red spectrum, melting and boiling points, attraction and repulson to magnets, etc.