The correct answer for the question that is being presented above is this one: "oxygen became available from cyanobacteria." About 1.2 billion years ago, eukaryotic and multicelled organisms evolved because oxygen became available from cyanobacteria.
Answer:
Geography is the study of places and the relationships between people and their environments. Geographers explore both the physical properties of Earth's surface and the human societies spread across it. ... Geography seeks to understand where things are found, why they are there, and how they develop and change over time.
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if it is correct please mark as the brainliest!
A white tail deer is a consumer.
Answer:
B. The science of determining the order of events in relation to each other, without a specific date.
Explanation:
you can look it up on the Wikipedia and you see something similar to B.
