The Mayas and the Roman Empire invented a calendar, they were so advanced in astronomy. On the other hand, both had their own systems to write: Mayas had hieroglyphs and the Roman Empire Latin. Finally, both cultures were polytheistic, which means that believed in many Gods.
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The complete adjective clause in the sentence is F. that I have prepared.
An adjective clause usually starts with who, whom, when, where, why, that or which. Most often it provides more information and description; however, it will not change the meaning of the sentence.
Answer:
1.) British Prime Minister Boris Johnson on Thursday celebrated the success of the Nova vax vaccine during U K trials.
2.) Africa has secured 400 million doses of the AstraZeneca Co vid - 19 vaccine which will be supplied by the Serum Institute of India (SII), according to the director of the African Union's disease control and prevention body.
3.) Health experts are working to understand more about a condition they are calling “long Co vid,” among patients who experience lingering symptoms months after contracting coronavirus.
4.) A Phase 3 trial of biotechnology company Nova vax’s Co vid- 19 vaccine shows it has an efficacy of 89.3%, the company announced on Thursday.
5.) France will adopt some of its vaccination schedules due to concerns over expected shortages, the French Health Ministry said in a news statement Thursday.
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