<span>In short, Family history plays a big role in the health of your heart. In Don's case he already have a huge history of high blood pressure which is regardless of his lifestyle choices.</span>
Answer:
THE ANSWER IS PLANT CELLS!!!
Explanation:
please give brainlest and points for this correct answer
Answer:
The appearance of free oxygen in the Earth's atmosphere led to the Great Oxidation Event. This was triggered by cyanobacteria producing oxygen which developed into multicellular forms as early as 2.3 billion years ago
Explanation:
To clarify what I said here are some questions to help!
How did oxygen first appear?
Whiffs in the air is how oxygen first appeared billions of years ago.
For the most part, scientists agree that oxygen, though lacking in the atmosphere, was likely brewing in the oceans as a byproduct of cyanobacterial photosynthesis as early as 3 billion years ago
When was oxygen found?
2.33 billion years ago
Since its first appearance 2.33 billion years ago, oxygen accumulated in high enough concentrations to have a weathering effect on rocks just 10 million years later.
I don't know if this helped you but if it does, please let me know!
Well first you should radio all others on scene and explain what you saw and where you saw it.
