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From Our Gallery
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 349
Portuguese man-of-war (Physalia), a colony of scyphozoans
 408
Evolutionary conservation of chromosome synteny
 432
Hydrostatic Skeleton: Earthworm
 538
Placoderm with Paired Fins
 315
Hydrozoan
 27654
An example of color blindness test. A person with red-green color blindness would not be able to dis
 250
Sympatric Speciation in Wheat
 544
The human brain
 445
Classification of bones according to shape
 325
Root uptake of soil water
 462
The brains of animals of different evolutionary ages
 315
Painting of a Jurassic scene
 427
Micrograph and graphic of a motor neuron
 184
Genes on chromosomes
 11074
Examples of epithelial tissue.
 354
Scarlet hood mushroom (Hygrophorus)
 316
Lamprey
 179
Infected Tobacco Leaves by a Virus
 29163
The bronchial tree
 685
Water-conserving structures in a transverse section of pincushion leaf (Hakea laurina)
 387
The cascade of events by which the stroke-induced release of glutamate kills neurons.
 5228
Ancient Warming Shrunk Horses to Housecat Size
 299
Diversity of Hawaiian Honeycreepers
 392
Representatives of major orders of placental mammals
 13481
Examples of sensory receptors in the skin of mammals.
 1130
Top down view of Olympus Mons, the highest known mountain in the solar system
 298
Wasp in Amber
 404
Cocaine’s Effect on the Brain
 75345
Generalized flower structure.
 135
Gregor Mendel
 430
Famous People with Parkinson's Disease
 317
Sieve plates
 279
Types of Synapses
 1376
Tissue Repair, Aging, and Disorders
 355
Scorpion
 2919
Structure of a mitochondrion
 383
Exogenous Antigen Processing
 293
Ascocarp: Scarlet Cup Fungus
 497
China has relied on cheap coal to meet its demand for energy
 12656
Development of an atherosclerotic plaque that progressively narrows the lumen of an artery to the po
 277
The chromosome scaffold of a metaphase chromosome
 745
Enceladus
 451
Trilateration GPS
 330
Some skeletal differences between a knuckle-walking gorilla and a bipedal human
 144
Telomeres
 11
Energy flow in the light-dependent reactions of photosynthesis
 465
Pancreatic Islets
 176
Daphnia pulex
 416
Nonanthropoid Primates: Lemur
 6066
A U-tube apparatus like the one used by Bernard Davis.
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Inflation-Adjusted Annuity Calculation (Increasing Annuities)
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Alcohol Content of a Shot Compared to a Beer
Volume of a Frustum (Derivation)
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Handling Partial Periods with Drop and Balloon Payments #finance #annuities
Future Value of Compound Interest Formula (How it Works and its Derivation)
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Grade 6 Math Challenge: Average Speed 95% Get This Wrong!
Deriving the Geometric Series Sum Formula
Solving Promissory Note Problems - Calculating Discounting Time
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Each of the following figures shows a person (not to scale) located on Earth at either 40°N or 40°S latitude. Rank the figures based on how much time the person spends in daylight during each 24-hour period, from most to least. To rank items as...
Quiz Me
What formal element is part of the original painting, Spotted Horses and Human Hands?
a.   the natural environment of the horses
b.   the illusion of three-dimensional space
c.   the outline...
Quiz Me
Who played grunge?
A.   Ministry
B.   Soundgarden
C.   Megadeth
D.   Skinny Puppy
Quiz Me
Compare and contrast Ansel Adams' Clearing Winter Storm, Yosemite National Park, California and Chris Steele-Perkins' Marshall Islands. How do the photographs inspire environmental conservation?
Quiz Me
Dr. Leland can prescribe drugs in some situations and works with depressed women. He must be a psychologist.
A) True
B) False
Quiz Me
Called a power analysis,  the calculations social scientists make begin with a projection of the number of cases expected to fall randomly into each possible category
 
  As a rough rule of thumb, social scientists would...
Quiz Me
Russ has a moderate intellectual disability, and his teacher Ms. Lucas uses his IEP as a guide for modifying instruction to meet his needs. In an upcoming social studies lesson, Russ will not be able to perform the tasks the other students will do...
Quiz Me
Norm rarely understands puns, and he struggles to understand figurative or metaphoric language. More than one friend has suggested that he sometimes says rude or inappropriate things in social situations. Norm has difficulty with the __________...
Quiz Me
Which term correctly identifies the cellos performing style?
 
  a. tremolo
  b. trill
  c. vibrato
  d. pizzicato
  e. glissando
Quiz Me
The Dutch avoided portraits out of fear of pride or vanity.
 
  Indicate whether the statement is true or false
Quiz Me
Which term describes the predominant musical technique heard in the listening
  example?
 
  a. motive
  b. syncopation
  c. ritard
  d. allegretto
  e. imitative...
Quiz Me
Sometimes when students are exhibiting inappropriate behavior, it is a result of their frustration at lacking the skills they need to perform successfully. In this case, the teacher should
 
  a. require the student to do only...
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