Which of the following was NOT an idea of Democritus? * A grain of sand could be divided indefinitely, and there's no limit to how small a grain
of sand could be.
O Atoms are unchangeable, indestructible, and have always existed.
O
When atoms collide with one another, they might repel each other or might connect in
clusters
O
Atoms are indivisible.

What is the density of the black hole

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange