Explanation:
In an alpha emission, an alpha particle is ejected from a large nucleus. An alpha particle is simply a helium nucleus (atomic number is 2 and mass number is 4) so that means that the atomic number of the emitting nucleus decreases by 2 and its mass number decreases by 4.
Answer:
Pterosaurs are more closely related to crocodilians. They share a more recent common ancestor than do pterosaurs and turtles.
Explanation:
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They both involve Heat, Oxygen, and Light.
A catalyst is a substance that speeds up a chemical reaction.
A because cation is positive and anion is negative evening it out at constant.
