I wish i can give more points but you can take it

Which of the following statements about the migration of workers to other countries is false?

The layers of earth are based on what two sets of characteristics?

Why is the huronian supergroup rock formation particularly interesting to scientists? because it looks like a cross-section of a giant, stone encyclopedia because it formed during the period when oxygen began to accumulate in the atmosphere because it contains unusually large amounts of oxygen and sulfur because it dramatically altered the planet's development when it first formed