How would you describe a dwarf planet? It is too big to be a planet, but too small to be an asteroid, meteor, or other space object.
It is too small to be a planet, and too small to be an asteroid, meteor, or other space object.
It is too small to be a planet, but too big to be an asteroid, meteor, or other space object.
It is too big to be a planet, and too big to be an asteroid, meteor, or other space object.

why do the isotopes of a particular element behave differently in nuclear reactions but the same in chemical reactions? chemical reactions involve changes to electrons in an atom; isotopes do not differ in electrons, and so they react the same way during chemical changes.

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.

answer; talc and gypsum;

the answer is c.the valence of the atoms combine .