Until the early there were only negligible amounts of free oxygen in the atmosphere

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

What structure on the south african coast has a range of 63 km and releases flashes every 30 seconds?

According to a recent survey, the local government wants to classify people according to their income earning capacity. they want to do so in order to provide special facilities for the poor. who among the four individuals will be classified as poor? a. joseph earns $2.25 per day b. maria earns $1.50 per day c. rosita earns $2.00 per day d. tim earns $ 1.00 per day