Answer:
Ca has 20 protons, so neutral it would have 20 electrons, but according to the charge, 2 electrons have been lost.
Explanation:
It has not. Evolution is not a process that can happen to individual organisms; it's change that happens to a species over many generations.
Around 93 million miles (150 million kilometers) away.
<span>The correct answer is b. The open ocean. The definition of an island ecosystem does not have anything to do with water, but simply refers to an ecosystem that exists as a microcosm within a far larger, separate ecosystem. The ocean has lots of separate island ecosystems within it, but it itself cannot be referred to as one.</span>
Your answer is c for #3, hope i helped!
