Asap! which of the following is a biotic factor in yellowstone national park? (5 points) high elevation low temperatures in winter narrow canyon walls population of elk proximity to thermal features

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

[ou.03jthe pictures below show the wavelengths and intensities of electromagnetic radiations emitted by three stars, star 1, star 2, and star 3. intensity intensity- intensity- 1000 3500 6000 8500 11000 wavelength (a) star 1 1000 3500 6000 8500 11000 1000 3500 6000 8500 11000 wavelength (a) wavelength (a) star 2 star 3 which of these statements is correct about the color of the three stars? star 2 is white in color o star 2 is yellow in color star 1 and star 3 are yellow in color star 1 and star 3 are white in color