#1

a) explain the theory of plate tectonics.

b) how does it account for the mid-atlantic ridge?

c) how does it account for volcanic island chains like hawaii?

（if answer in handwriting way, make it readble）

Can someone list any possible solutions to air pollution ?

What is the name of the ocean current that affects the british isles? how does it influence their climate?

Alaina wants to decide whether her current cell phone plan is better than a package that another company offers. to compare the two plans, she plotted two lines on a graph, where y represented the total cost of one month’s service and x represented the megabytes of data that she used in a month. which part of the graph will represent the cost per megabyte of data used in each plan?