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What is an evolutionary tree diagram?
levels of oxygen increased
common ancestor
65 million years ago
a diagram that shows evolutionary relationships between organisms
4.55 billion
A massive asteroid struck Earth.
after
mammals
When did non-avian dinosaurs become extinct?
levels of oxygen increased
common ancestor
65 million years ago
a diagram that shows evolutionary relationships between organisms
4.55 billion
A massive asteroid struck Earth.
after
mammals
What event likely led to the extinction of non-avian dinosaurs?
levels of oxygen increased
common ancestor
65 million years ago
a diagram that shows evolutionary relationships between organisms
4.55 billion
A massive asteroid struck Earth.
after
mammals
How was Earth's atmosphere likely affected by the development of photosynthesis?
levels of oxygen increased
common ancestor
65 million years ago
a diagram that shows evolutionary relationships between organisms
4.55 billion
A massive asteroid struck Earth.
after
mammals
Rats and opossums are modern examples of __________, which first appeared 200 million years ago.
levels of oxygen increased
common ancestor
65 million years ago
a diagram that shows evolutionary relationships between organisms
4.55 billion
A massive asteroid struck Earth.
after
mammals
About how many years ago did Earth form?
levels of oxygen increased
common ancestor
65 million years ago
a diagram that shows evolutionary relationships between organisms
4.55 billion
A massive asteroid struck Earth.
after
mammals
Eukaryote life began ___________ prokaryote life.
levels of oxygen increased
common ancestor
65 million years ago
a diagram that shows evolutionary relationships between organisms
4.55 billion
A massive asteroid struck Earth.
after
mammals
Two organisms branch from the same point on an evolutionary tree diagram. The point that they branch from represents a(n)
levels of oxygen increased
common ancestor
65 million years ago
a diagram that shows evolutionary relationships between organisms
4.55 billion
A massive asteroid struck Earth.
after
mammals
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