Question 7 which one is a false statement? oa the quantity of atmospheric water vapour changes temporally and spatially (over time and space) b. as altitude (elevation) increases, air pressure decreases c. naturally occurring ozone is beneficial (good for) the biosphere d atmospheric co2 is part of a negative feedback loop ○ e. clouds must have water vapor in order to form

Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size

Most materials are not magnetic because their magnetism has worn off. their magnetic domains are arranged randomly. they lack magnetic fields. earth’s heat has destroyed their magnetism.