It is only at the highest latitudes that temperature will set additional physiologic limits. |
Here in the temperate northern latitudes trees have adapted over eons of regular annual seasons. |
In the contemporary ocean, cysts tend to be most abundant in seas of temperate latitudes. |
High southern latitudes were not invaded by angiosperms until the end of the Cretaceous. |
At the mid-latitudes, the winds are called the westerlies, and at the highest latitudes, the winds are called the polar easterlies. |
Broad environmental conditions, particularly average temperatures, differ less among populations in equatorial regions than at higher latitudes. |