During the june solstice the sun never sets north of the arctic circle. true or false?

Which factors add to the greenhouse effect and are caused by human activities?

When volcanoes erupt, magma (hot, molten rock) rises toward the surface of the earth. as magma cools, solid rock forms. this rock contains substances from the interior of the earth. which of the following natural resources is likely to be plentiful near subduction zones where volcanic activity has occurred in the past?

He resistance of a liquid to flowing is called