Answer:
I'm guessing first hand accounts.
Explanation:
Hope this helps
Reflection occurs when waves bounce back from a barrier they cannot pass through. ... Wave interference occurs when waves interact with other waves. Constructive interference increases wave amplitude. Destructive interference decreases wave amplitude.
Answer:
Literacy is traditionally defined by dictionaries as the ability to read and write. In the modern world, this is one way of interpreting literacy. One more broad interpretation sees literacy as knowledge and competence in a specific area. The concept of literacy has evolved in meaning
Explanation: