Which of the following is an example of a mixture?

oxygen
air
O hydrogen
water

Volcanic irruption is most likely to be violent when a) volcanoes near to the sea b) the neck of the volcano is sealed by a plug c) the lava is viscous d) the lava reaches the surface through a fissure e) the volcano is on the ocean floor

Why are shark population in decline worldwide?

What is an example of a line segment