![subject](/tpl/images/cats/biologiya.png)
Pl ! scientists estimate that the earth formed some 4.6 billion years ago with the first forms of life appearing around 3.5 billion years ago. these first forms of life were simple prokaryotes. later, the first photosynthetic organisms resulted in more in the atmosphere. this allowed for more higher level organisms to appear on earth. a) carbon b) nitrogen c) oxygen d) sulfur
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Biology
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 03:30
How can active reading strategies you? o a. they can you get into better physical shape. o b. they can you read fewer science articles. o c. they can you understand what you read. o d. they can you avoid reading altogether.
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 03:30
Which of the following is an effect of the uneven heating of the earth by the sun? a sea breeze a land breeze a convection current all of the above
Answers: 2
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
You know the right answer?
Pl ! scientists estimate that the earth formed some 4.6 billion years ago with the first forms of li...
Questions
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mir.png)
World Languages, 17.02.2021 05:40
![question](/tpl/images/cats/himiya.png)
Chemistry, 17.02.2021 05:40
![question](/tpl/images/cats/User.png)
Engineering, 17.02.2021 05:40
![question](/tpl/images/cats/mat.png)
Mathematics, 17.02.2021 05:40
![question](/tpl/images/cats/istoriya.png)
History, 17.02.2021 05:40
![question](/tpl/images/cats/es.png)
Spanish, 17.02.2021 05:40
![question](/tpl/images/cats/es.png)
Spanish, 17.02.2021 05:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 17.02.2021 05:40
![question](/tpl/images/cats/en.png)
English, 17.02.2021 05:40
![question](/tpl/images/cats/mat.png)
Mathematics, 17.02.2021 05:40
![question](/tpl/images/cats/biologiya.png)
Biology, 17.02.2021 05:40
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 17.02.2021 05:50
![question](/tpl/images/cats/mat.png)
Mathematics, 17.02.2021 05:50
![question](/tpl/images/cats/mat.png)
Mathematics, 17.02.2021 05:50
![question](/tpl/images/cats/mat.png)