The early Universe basically only consisted of hydrogen, and small amounts of helium. Heavier elements were created in the center of stars - these materials got into space, mainly through supernova explosions, and became part of newer solar systems.
Because they are billions and billions and billions of miles away from us.
Billions of stars make up a galaxy.
There are literally billions of billions of stars. The vast majority are medium stars.
galaxies
There are billions and billions of satellites they are all diffrent shapes and sizes here is a list of types.NavigationCommunicationExplorationWeatherAstronomyMilitaryReserch
yes b/c hydrosphere is all the water in the world and there is a lot of marine/ocean life ranging from the blue whale to plankton (not spongebob -_-) so yeah there is life in the hydrosphere. go h2o!
The primary factor that was missing for billions of years that was necessary for protists to evolve was oxygen in the atmosphere. Billions of years ago, the atmosphere was mostly made up of carbon dioxide, carbon monoxide, hydrogen, nitrogen, and water vapor.
The primary factor that was missing for billions of years that was necessary for protists to evolve was oxygen in the atmosphere. Billions of years ago, the atmosphere was mostly made up of carbon dioxide, carbon monoxide, hydrogen, nitrogen, and water vapor.
The primary factor that was missing for billions of years that was necessary for protists to evolve was oxygen in the atmosphere. Billions of years ago, the atmosphere was mostly made up of carbon dioxide, carbon monoxide, hydrogen, nitrogen, and water vapor.
Carbon dioxide that has been taken out of the atmosphere and trapped inside oceans, sedimentary rocks, volcanoes etc. from billions and billions of years ago :)
Carbon dioxide that has been taken out of the atmosphere and trapped inside oceans, sedimentary rocks, volcanoes etc. from billions and billions of years ago.
...lowered the level of CO2 in the atmosphere and released O2
The atmosphere relieved itself of moisture in the form of rain.
Billions and Billions and Billions Billions and Billions and Billions Billions and Billions and Billions Billions and Billions and Billions Billions and Billions and Billions Yeah incase u don't get it HEAPS
To block the sun's rays to prevent from anymore global warming
Cyanobacteria carried out photosynthesis, turning water and carbon dioxide into carbohydrates and oxygen.
The primary factor missing for billions of years that was necessary for protists to evolve was atmospheric oxygen. In order to grow and evolve, protists needed oxygen at a time when there was little in the atmosphere.