Answer:
-plasma
-nebula
-increases/increases
-main sequence
-plots stars according to their luminosity and temperature, which is also associated with spectral class
-using radiometric dating / analyzing impact craters
-emissions and absorption/interaction of light and atoms
-they show the composition of a star
-carbon
-radio waves and ultraviolet light
Explanation:
Just took the quiz
Answer:
D
Explanation:
When a substance moves from low to high concentration it is moving against its concentration gradient, which requires more energy.
A. It depends on where it is moving, not the substance
OB. This is describing diffusion
OC. Does not require energy, it is passive transport through a semi-permeable membrane
Heat and light (campfire), chemical ( beans as food), and kinetic (you hiking).