True or false: -the water in a river is warmest at its headwaters. -the waters in an ocean are coldest in the neritic zone. -cities are usually colder than their surrounding regions.

The creation of the trans-siberian railway allowed people to travel across russia. how could this railway impact russian culture?

Why do so many children develop illnesses in southern africa? a. poor nutrition due to poverty c. very bad air pollution b. climate many diseases thrive d. declining life expectancy

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?