Remember, the cooler stars are white or yellow like the sun, and hottest are blue. Based on that, it should be in this order: Barnard's Star, Polaris, Sirius, and Rigel.
Using hydrogen in his experiments Bohr showed that an electron spins around the atom nuclei at a specific/discrete radii (orbital levels). Electrons at every orbital level spin at a discrete angular momentum and energy. When the electron moves one orbital level down, it releases a photon of energy specific to the jump (that is, of a particular spectrum that is unique to the atom). When the electron goes up an orbital level, energy (of a specific spectrum) is absorbed. This emission and absorption spectrum varies across atoms and is calculated as (delta)E = hf where;
E = energy
h = Planck's constant
f = frequency
Evolution. As climate and environment change over time, populations change over time
Explanation:
The difference between Meristematic Tissue and Permanent Tissue are:
- Meristematic tissue always has a prominent nucleus. Permanent tissue has a prominent nucleus in some like parenchyma while not in others like sclerenchyma.
- Meristematic tissue has cells small in size and isodiametric in shape. Permanent tissue has cells large in size and their shape varies.