PLEASE ANSWER FAST WILL MARK BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
please answer all to get brainliest!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
question number 1
Which cells contain a nucleus and membrane-bound organelles?


archaean


eukaryotic


prokaryotic


cyanobacteria
question number 2
What organism has been found in the oldest fossils?


cyanobacteria


fish


ferns


humans
question number 3
Which process do scientists think provided Earth with an oxygen-rich atmosphere?


photosynthesis


spontaneous generation


respiration


radiometric dating
question number 4
Where did all the elements other than hydrogen and helium come from?


They were produced by cyanobacteria.


They were made in stars.


They were made during the big bang.


They were made in the formation of the solar system.
question number 5
From where do scientists think the water on Earth might have come?


violent storms created by dust particles


water vapor came out of volcanoes


explosion of stars released water


collision of Earth with stars