Geological Events
During the Cretaceous period, the supercontinent Pangaea continued to break apart, forming the modern continents we know today. This period also saw a significant rise in sea levels, leading to the formation of shallow seas and the expansion of marine environments.Biological Events
The Cretaceous period is perhaps best known for being the heyday of the dinosaurs. It was a time of remarkable diversification, with the appearance of new dinosaur species and the dominance of large herbivorous and carnivorous dinosaurs.Study Guide
To study the Cretaceous period, it is important to understand the geological and biological events that occurred during this time. Here are some key points to focus on:- Continental drift and the breakup of Pangaea
- Rise in sea levels and the formation of shallow seas
- Evolution and diversification of dinosaurs
- Major extinction events, including the end-Cretaceous mass extinction
[Cretaceous] Related Worksheets and Study Guides:
.◂Science Worksheets and Study Guides Fourth Grade. Ecosystems and changes in ecosystems
Study Guide
Ecosystems and changes in ecosystems 
Worksheet/Answer key
Ecosystems and changes in ecosystems Worksheet/Answer key
Ecosystems and changes in ecosystems Worksheet/Answer key
Ecosystems and changes in ecosystems Vocabulary/Answer key
Ecosystems and changes in ecosystems Vocabulary/Answer key
Ecosystems and changes in ecosystems Vocabulary/Answer key
Ecosystems and changes in ecosystems
Worksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyVocabulary/Answer keyVocabulary/Answer keyThe resources above cover the following skills:
Life Science
There is interaction and interdependence between and among living and nonliving components of ecosystems. Students can:
Identify the components that make a habitat type unique
Compare and contrast different habitat types