Examlex
Geology is the only factor that explains the concentration of known resources in just a few countries.
UV Wavelengths
The portion of the electromagnetic spectrum with wavelengths shorter than visible light but longer than X-rays, known for having sterilizing properties and causing sunburn.
Action Spectrum
A graph of the effectiveness of light at specific wavelengths in promoting a light-requiring reaction. Compare with absorption spectrum.
Absorption Spectrum
A graph of the amount of light at specific wavelengths that is absorbed as light passes through a substance. Each type of molecule has a characteristic absorption spectrum. Compare with action spectrum.
Carotenoids
A class of pigments found naturally in plants, algae, and photosynthetic bacteria, important for photosynthesis and providing coloration.
Q9: Describe the three phases of the third
Q31: The process of allocating electoral seats to
Q53: A picture of a landscape in which
Q65: Core-periphery inequalities are commonly found within core
Q123: Rostow's model of economic development<br>A) is equally
Q169: Intensive subsistence agriculture<br>A) is used primarily in
Q200: Christianity<br>A)evolved from Hinduism<br>B)lowlands in the subcontinent of
Q202: The practice of writing and reading signs
Q204: During the Cold War,some policymakers strongly believed
Q239: Which involves formal establishment and maintenance of