WILL GIVE BRANLYEST (IF CORRECT) What is the tundra’s permanently frozen layer of ground called? 
permafrost

soil frost

ground layer

active soil

Describe alvord's tone in the two paragraphs on the history of dartmouth and its native american studies program (paras. 21-22)?

Me with my drivers and you! ** will mark you brainliest and give you 15 free points if answered correctly ** when you're upset, you're up to times as likely to get into a crash. a. 2 b. 4 c. 8 d. 10

What is tge speed of sound in dry air at 0°c