1. True
2. True
3. False
Hope I helped with these correct answers, and good luck!
Answer:
The correct answer is option - C. They replaced carbon dioxide with oxygen in the atmosphere.
Explanation:
Cyanobacteria or Blue-green algae is a group of bacteria that is making its own food using water and carbon dioxide in the presence of sunlight, the process of photosynthesis
These organisms release oxygen as a byproduct of photosynthesis in the atmosphere. Through this process, these organisms replaced carbon dioxide with oxygen in the atmosphere in the early earth.
Thus, the correct answer is option C. They replaced carbon dioxide with oxygen in the atmosphere.
The answer u r looking for is- D* failure of the immune system to distinguish self from nonself. Hope I’ve helped ;)
Answer:
B. surface runoff
Explanation:
Surface runoff is the flow of water that occurs when excess storm water, melt water, or other sources flow over the Earth's surface.
hope this helps
It’s a layer located outside of the cell envelope
