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Why couldn't complex organisms develop the establishment of the ozone layer?
Wiki User
∙ 9y ago
UV rays were the one's that hindered complex organisms. With the ozone layer, these rays were absorbed.
Wiki User
∙ 9y ago
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Why did the earliest organims in the fossil record start off single celled?
It took many years of evolution for complex, multi-celled organisms to develop. Single celled organisms were the first that were around to be fossilized.
Why did complex organisms that inhabit the earth develop?
"They" happened by accident (i.e. mutations), and the ones that were more efficient eat the less efficient. That's life.
What events occurred that allowed single - celled organisms to into more complex organisms at the end of the precambrian time?
the ozone layer began to develop shielding earth from ultraviolet rays, this was hypothesized that these changes allowed species of single celled organisms to evolve into more complexed organisms
What is true of organisms?
Organisms grow and develop
What event occured that allowed single celled organisms to evolve into more complex organisms at the end of the precambrian time?
the ozone layer began to develop shielding earth from ultraviolet rays, this was hypothesized that these changes allowed species of single celled organisms to evolve into more complexed organisms
What event occurred that allowed single-celled organisms to evolve into more complex organisms at the end of the Precambrian time?
the ozone layer began to develop shielding earth from ultraviolet rays, this was hypothesized that these changes allowed species of single celled organisms to evolve into more complexed organisms
What events occured that allowed single celled organisms to evolve into more complex organisms at the end of the precambrian time?
the ozone layer began to develop shielding earth from ultraviolet rays, this was hypothesized that these changes allowed species of single celled organisms to evolve into more complexed organisms
What event occurred that allowed single celled organisms to evolve into more complex organisms at the end of the Precambrian time?
the ozone layer began to develop shielding earth from ultraviolet rays, this was hypothesized that these changes allowed species of single celled organisms to evolve into more complexed organisms
What events occurred that allowed single celled organisms to evolve into more complex organisms at the end of the Precambrian time?
the ozone layer began to develop shielding earth from ultraviolet rays, this was hypothesized that these changes allowed species of single celled organisms to evolve into more complexed organisms
What is true of all organisms?
Organisms grow and develop
How might the establishment of agriculture have helped humans to develop new skills and interests bringing people?
The establishment of agriculture allowed humans to settle in one place, freeing up time to develop new skills and interests such as pottery, metalworking, and writing. It also led to a surplus of food, enabling population growth and the specialization of labor, leading to the development of complex societies and civilizations.
What changes were necessary in earth's atmosphere to allow complex organisms to evolove?
During the few billion years following the appearance of cyanobacteria, oxygen became a major gas in Earth's atmosphere. The ozone layer in the stratosphere also began to develop, shielding Earth from ultraviolet rays. These major changes in the air allowed species of single-celled organisms to evolve into more complex organisms.
