Did you know?
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
Did you know?
If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.
Did you know?
During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
Did you know?
In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
Did you know?
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
This solitary tree is an appropriate symbol for the tree of life
An emergency medical technician positions defibrillator paddles on the chest of a supine male patien
Tree
Henry Fox Talbot, The Open Door.
Modern house door design
evolution tree