4 ms·
Simple version: The amount of Oxygen in the air decreased, giving the Dino-birds less energy. so they became smaller. Also air with less Oygen is lighter, anot
by Radle 11y ago
Simple version: The amount of Oxygen in the air decreased, giving the Dino-birds less energy. so they became smaller.
Also air with less Oygen is lighter, another good reason for Dino-birds to loose weight.
- cchip 11y agoOn the contrary: The amount of CO₂ decreased. I see more of a correlation between CO₂, big plants (food supplies) and animals.