If we discovered tomorrow that the distances we measured to galaxies were incorrect, and that Hubble's constant is 35 km/sec per Mpc instead of 70 km/sec per Mpc, we would conclude that the universe's age is previously thought.

Ametal with a large number of free flowing electrons most likely has good conductivity

What do you need with it’s not a question your just stating what it says

Each calcium ion has a charge of +2, which can also be written as ca2+. if those ions move out of the neuron and no other ions are moving, the neuron would lose the positive charge associated with those ions and become more negatively charged.

The surface of the water droplet is held together by the attraction between molecules. in order for water to flow more easily into these small spaces, you need to decrease its surface tension. you can do this by adding soap, which is a surfactant (a material that decreases the surface tension of a liquid).