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What else can I help you with?
Extinctions only occurred in the past?
false :)
Would it be true to say that extinctions only occurred in the past?
false
Past mass extinctions most likely occurred as a result what?
Sudden changes in environmental conditions.
How many mass extinctions have occurred in the past 4 billion years on earth?
There have been five mass extinctions in the past 4 billion years on Earth. These events resulted in the widespread loss of species and fundamentally reshaped the evolution of life on our planet.
What is Sources of evidence about past extinctions?
fossils
How do you spell past tense of occur?
The past tense of occur is occurred.
What is the past participle of the verb to occur?
THE PAST Participle of occur is occurred!
What is the past tense for the word occur?
The past tense of the word "occur" is "occurred."
Is it true that extinctions only occur in the past?
Every single extinction has happened in the past. If an extinction is happening this instant we will not know about it until it is in the past. As and when any future extinctions happen we will not know about it until it is in the past.
How do you spell the past tense of 'occur'?
The past tense of "to occur" is occurred.
What is the past participle of occur?
The past participle is occurred.
When did the 5 mass extinctions occurred?
The five mass extinctions that occurred in Earth's history took place during the Ordovician period (about 445 million years ago), the Devonian period (about 375 million years ago), the Permian period (about 251 million years ago), the Triassic period (about 200 million years ago), and the Cretaceous period (about 66 million years ago).
