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.
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The interstitial fluid is the fluid that moves around in the circulatory system of a typical arthropod. Arthropods have an open circulatory system, which pumps blood into a cavity called hemocoels that sorrounds the organs and then returns to the heart through ostia (openings). They contain hemolymph which is a mixture of blood and the interstitial fluid.
Whats wrong with this experiment is that this student put two different independent variables in the experiment. The first one being that he put five seed pots with detergent and the other 5 not, the second one is that he put five of the pots in the shade and the other five in the sun. This students results will not be very accurate.
The most common type of bacteria that causes community-acquired pneumonia (CAP) is Streptococcus pneumoniae. Other bacteria that cause CAP include Mycoplasma pneumoniae, Chlamydophila pneumoniae, and Legionella pneumophila. Mycoplasma pneumoniae is known to be the main cause of walking pneumonia.