How can I describe the yearly temperatures of the Tundra biome?

The arctic tundra has average winter temperatures of -34° C (-30° F) and average summer temperatures of 3° to 12° C (37°to 54° F).

Explanation:

Very cold all year or very hot

Explanation:

I learned it last year i think

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d