What is the frozen soil of the tundra called?

canopy

understory

savanna

permafrost

Which of the following best describes the economy of africa?

Based on what you know about speed of light and sound, which come/comes first in a thunderstorm

Pls pls pls choose a city in ecuador, peru, or bolivia. look up all the information you can find about it. then write about the city of your choice in a report of 150 words. after you have finished your writing assignment, review it and correct any errors you find in punctuation, grammar, spelling, and the way you write your sentences. can you choose words with more exact meanings or more vivid descriptions?