Who first proposed the theory of evolution by natural selection?

Who first proposed the theory of evolution by natural selection?

In the early 19th century, Jean-Baptiste Lamarck proposed his theory of the transmutation of species, the first fully formed theory of evolution. In 1858, Charles Darwin and Alfred Russel Wallace published a new evolutionary theory that was explained in detail in Darwin’s On the Origin of Species (1859).

When did Greenwich mean time start?

Greenwich Mean Time (GMT) was adopted as the world’s time standard at the Washington Meridian Conference in 1884. This conference also established Universal Time, from which the international 24-hour time-zone system grew. This is why all time zones refer back to GMT on the prime meridian.

When was the novel To Kill a Mockingbird Written?

To Kill a Mockingbird is a novel by Harper Lee published in 1960. It was immediately successful, winning the Pulitzer Prize, and has become a classic of modern American literature.

Why does the sun lighten our hair and darken our skin?

Melanin is a pigment found in your skin and hair cells that gives each its color. It does seem weird that the sun bleaches our hair and darkens our skin. This mostly has to do with hair being dead and skin being alive. The sun bleaches and destroys the melanin in your hair giving you lighter hair.

What igneous rock can float on water?

Pumice is composed of highly microvesicular glass pyroclastic with very thin, translucent bubble walls of extrusive igneous rock.

Do mosquito eaters actually eat mosquitoes?

Adult crane flies do not eat at all; most adult crane flies only mate and then die. Crane fly larvae are called leatherjackets or ‘leatherjacket slugs’ because of the way they move and eat roots (such as those of grass in lawns) and other vegetation. Leatherjackets can sometimes cause damage to plants.

Who Named Pluto and Why?

The name Pluto was suggested by Venetia Burney, an 11-year old school girl in England. She was interested in ancient mythology, and thought that Hades, the Greek god of the underworld, made a good name. She suggested Pluto, to match the Roman god names given to the other planets.

What did the winners receive in the ancient Olympic games?

The olive wreath also known as kotinos (Greek: κότινος), was the prize for the winner at the ancient Olympic Games. It was an olive branch, of the wild- olive tree that grew at Olympia, intertwined to form a circle or a horse-shoe.