Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Did you know?
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Did you know?
Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.
Did you know?
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
Did you know?
Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
Oceanic circulation, which is driven mainly by the prevailing winds, moderates earth's climate.
energy of interaction and distance of particle
Earth emits radiation back out to space from all surfaces, both day and night
Gravitational Potential Energy for the Earth problem