Approximately what percent of the world's population owns half of all global personal wealth

In order from largest to smallest what are earths five main oceans

Ineed , i need to create a power point in life science here is a picture explaining a little what the topic is about, me with some information for my slides : (

Renaldo and nasreen build an electromagnet by wrapping a wire around a nail and connecting the wire to both terminals of a battery. when they test the electromagnet, it can pick up 6 paper clips. their teacher wants all groups to pick up at least 10 paper clips. what could renaldo and nasreen do to increase the number of paper clips their electromagnet picks up?