Sentences with phrase «when multicellular life»

There was an era called white earth which starts about 700 million years ago with alternating periods of deep ice sheets and then hotter warmer stages which led to formation of various kinds of crystals, and last and luckily we live in the period known as green earth, which started about 400 million years ago when multicellular life arose and wholly changed to biochemical breakdown the makeup of the minerals on the planet again.

Emitted in a distant galaxy when multicellular life was just beginning to populate Earth, the waves traveled at the speed of light for more than a billion years to at last wash over our planet last September, taking just seven milliseconds to traverse the distance between LIGO's twin listening stations in Louisiana and Washington State.

Not exact matches

Honing in on when life on Earth evolved from single - celled to multicellular organisms is no easy task.

The unique ecosystems of Cuatro Cienegas may yield insights into what sparked the Cambrian transition, a pivotal time about 540 million years ago when simple, single - celled life developed into a wide variety of multicellular forms.

But they think they have an answer, at least when it comes to the evolution of multicellular life.

Bodily fluids bear such a complexity going back to the principle of life when unicellular plants had to learn some important features to let multicellular beings grown and extend roots and branches expanding their size and functioning.