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Solve 7*2+(7+3*(5-2))/4*2

An experimental approach in which scientists make observations about the natural world, develop tentative explanations about what they observe, and then test those explanations by collecting more information, is referred to as ____.​

A pure substance that cannot be broken down into simpler substances by ordinary chemical or physical techniques.  

You are studying an ecosystem on your campus. After completing some research and educating yourself about ecosystems, your next step would be to ____.​

Gideon Company uses the allowance method of accounting for uncollectible accounts. On May 3, the Gideon Company wrote off the $3,900 uncollectible account of its customer, A. Hopkins. The entry or entries Gideon makes to record the write off  of the account on May 3 is:

The most exclusive and smallest grouping in the classification of living organisms is the ____.​

Isotopes of the same element differ from each other in the number of ____.​

As I discussed in my Lecture this week, justice/fairness is often an argument used in favor of some kind of conscription/national service.

What is 18% in decimal form?

An oxygen atom made up of ____ surrounding a nucleus composed of ____.​