The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
Did you know?
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
Did you know?
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
Did you know?
Medication errors are more common among seriously ill patients than with those with minor conditions.
Sporic life cycles
The Scale of Life 2
Laminaria Life Cycle
Most of the world’s remaining gorillas are western lowland gorillas.
Life Cycle Nutrition: Toddlers through the Later Years
Type III curve. Mortality is highest early in life. Data for a desert shrub (Cleome droserifolia).