Answer:
c. energy needed to excite the electrons.
Explanation:
The Amazon River basin has a low-water season, and a wet season during which, the rivers flood the adjacent, low-lying forests. The climate of the basin is generally hot and humid.
It becomes brighter because, THE CORE CONTRACTS, RAISING THE TEMPERATURE AND EXTENDING THE HYDROGEN BURNING SHELL OUTWARD. This stage is called the hydrogen shell burning phase and during this phase the star grows luminous.
The correct answer is letter D. Rain shadow refers to this specific phenomenon. This happens because the mountains tend to block the precipitation causing the area below it to experience a dry climate. This is why most seasons in the Caribbean Islands are usually tropical and the weather is mostly sunny.
C is the answer...................... ....