Cyanobacteria use water, carbon dioxide, and sunlight to create their food, and expel oxygen as a by-product. The real significance of stromatolites is that they are the earliest fossil evidence of life on Earth. ... They were the first known organisms to photosynthesis and produce free oxygen.
For the first one I think it D and for the second one I think it is A, I hope this helps
Answer: Africans were forbidden from buying or leasing land outside those reserves. Europeans, likewise, were unable to buy or lease land from Africans.
Explanation:
The primary purpose of Teddy Roosevelt's fight against trusts was to show both US residents and the world that businesses were not in charge of the country–the government was.
Hope I could help!
