Final answer:
Dinosaur extinction was caused by the impact of an asteroid, not by thin eggshells, which resulted in environmental changes that disrupted ecosystems and led to mass extinctions.
Step-by-step explanation:
The assertion that dinosaurs became extinct because their eggshells were too thin is false. The primary cause of dinosaur extinction is generally believed to be an asteroid impact at the end of the Cretaceous period, approximately 65 million years ago. This catastrophic event resulted in environmental disasters, including debris blocking sunlight, disrupting photosynthesis, and changing global climates.
This major disruption led to mass extinctions, affecting both flora and fauna, ultimately signaling the end of the age of dinosaurs. Evidently, while dinosaurs were diverse in size and habits, including providing parental care for their offspring, their survival was compromised by these large-scale environmental changes rather than eggshell thickness.