If phoenix, arizona, experiences a cool, wet day in june, does that mean the regions climate is changing?

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.

The energy equivalent of the rest mass of an electron is