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vocabulary

Across
The largest divison of geologic time
To change over time in order to survive in a particular environment
Air breathing vertebrates covered in special skin made up of scales, bony plates, or a combination of both
The fourth largest division of geologic time
Middle life lasted from about 248 to 63 million years ago
The time before written records
The second largest division of geologic time
The third largest division of geologic time
The third largest division of geologic time
A scale that divides earth's 4.6 billon year history into district intervals of time
The largest group of organisms
Old life lasted about 540 to 248 million years ago
Air breathing vertebrates covered in special skin made up of scale,bony plates,or a combination of both
A grouper reptiles that lived million of years ago
Recent life began about 65 million years ago continues today age of ramael
Down
The fourth largest division of geologic time
The time before written reccords
Recent life began about 65 million years ago and continues today age of ramael
To change over time in order survive in a particular environment
Scientsts that study fossils
A scale that divides earth's 4.6 billion year history
Old life lased from about 540 to 248 million years ago
Middle life lasted from about 248 to 63 million years ago age or reptiles
An animal describe as giving birth to live young drinking milk from it's mom and having hair
Scientsts the study fossils
The largest group of organisms
An animal describe as giving birth to live young drinking milk from it's mom ad having hair
The largest divison of geologic time
A group of reptiles that lived million of years ago
The second largest divison of geologic time