A severe thunderstorm with a possible tornado is approaching your town. The mayor needs to decide whether the citizens need to take shelter. Which two weather instruments will aid the mayor in making this decision?

If a || b and e || f, what is the value of y ?

How are isotopes of the same chemical element alike? how are they different?

Which activity describes an application of topographic maps? check all that apply. recreation, such as camping and hiking engineering, such as the construction of roads and buildings science, such as mapping stars in the sky business, such as analyzing population centers science, such as analyzing surface features