Answer:
A white dwarf is what stars like the Sun become after they have exhausted their nuclear fuel. Near the end of its nuclear burning stage, this type of star expels most of its outer material, creating a planetary nebula. Only the hot core of the star remains. ... That means a white dwarf is 200,000 times as dense.
Explanation:
they are cold
they are about the size of Earth
these both are not true
Answer:
<em>yes</em>
Explanation:
the cuttle fish tell the difference between blue and yellow
The opposite type of reaction (where energy is taken in from the surroundings of a reaction and thus the energy of the reactants is lower than that of the products) is called an endothermic reaction
Answer:
A) <u><em>Dinitrogen Oxide:</em></u>
=> 
(Also called Nitrous Oxide)
B) <u><em>Calcium Dihydrogen Phosphate:</em></u>
=> 
(Also called Monocalcium phosphate)
