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2. Electromagnetic spectrum - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_spectrum

   By definition, visible light is the part of the EM spectrum the human eye is the most sensitive to. Visible light (and near-infrared light) is typically absorbed and emitted by electrons in molecules and atoms that move from one energy level to another. This action allows the chemical mechanisms that underlie human vision and plant photosynthesis.

3. Sound - Wikipedia

   en.wikipedia.org/wiki/Sound

   This identity is based on information gained from frequency transients, noisiness, unsteadiness, perceived pitch and the spread and intensity of overtones in the sound over an extended time frame. [10] [11] [12] The way a sound changes over time provides most of the information for timbre identification. Even though a small section of the wave ...

4. Biology - Wikipedia

   en.wikipedia.org/wiki/Biology

   The NADPH and ATPs generated by the light-dependent reactions in the second and third stages, respectively, provide the energy and electrons to drive the synthesis of glucose by fixing atmospheric carbon dioxide into existing organic carbon compounds, such as ribulose bisphosphate (RuBP) in a sequence of light-independent (or dark) reactions ...

5. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

6. Sense - Wikipedia

   en.wikipedia.org/wiki/Sense

   Sensory organs are organs that sense and transduce stimuli. Humans have various sensory organs (i.e. eyes, ears, skin, nose, and mouth) that correspond to a respective visual system (sense of vision), auditory system (sense of hearing), somatosensory system (sense of touch), olfactory system (sense of smell), and gustatory system (sense of taste).

7. Today’s NYT ‘Strands’ Hints, Spangram and Answers for Friday ...

   www.aol.com/today-nyt-strands-hints-spangram...

   We'll cover exactly how to play Strands, hints for today's spangram and all of the answers for Strands #313 on Friday, January 10. Related: 16 Games Like Wordle To Give You Your Word Game Fix More ...

8. Quizlet - Wikipedia

   en.wikipedia.org/wiki/Quizlet

   Quizlet was founded in 2005 by Andrew Sutherland as a studying tool to aid in memorization for his French class, which he claimed to have "aced". [ 6 ] [ 7 ] [ 8 ] Quizlet's blog, written mostly by Andrew in the earlier days of the company, claims it had reached 50,000 registered users in 252 days online. [ 9 ]

9. 15 holiday gifts for dementia patients and caregivers ...

   www.aol.com/15-holiday-gifts-dementia-patients...

   11. A memory phone can store photos with names and contact information. 12. Puzzles and activity books stimulate the brain and promote cognitive sharpness.. 13. Card games and board games ...