The green earth, a landscaping company, finds that the most difficult firms to get business from are the because this group considers numerous and even unfamiliar suppliers, solicits bids, and carefully analyzes options; therefore, it requires a higher levels of customer service.

Optimizer

Explanation:

From the following scenario, we can state that Green Earth finds optimizer to be the most difficult firms to get business from. Optimizer are known to be or referred to as an individual or an organization in a very large business market whose tend to perform the task to maximize the profits and thus make their business much more efficient .

the historians cited in the article all agree with one another about the cause of the civil war. despite coming from different backgrounds and cultures, the historians agree that slavery was the root cause of the civil war. the fact that all these historiansgenerally agree with one another makes their shared viewpoints more reliable and valid, especially because the historians have different backgrounds and all work for the well-respected institutions of howard university, clemson university, and the university of colorado.

answer; ewing's sarcoma;