Hydrogen bonds break down.
hope it helps.
1. rise of angiosperms
2. rise of chemoautotrophs and photoautrophs
3. rise of multicellularity
4. rise of bryophytes
5. rise of gymnosperms
6. rise of eukaryotes
7. rise of cyanobacteria
Mantle convection causes tectonic plates to move around the Earth's surface.
The major organ of the circulatory system that causes blood to flow through the body by its pumping action is the heart.
