The expulsion of molten rock (____) from a volcano can occur either gently or violently.

Which of the following spiders can cause a characteristic wound with a bite that is often painless?

A) Brown recluse spider B) Black widow spider C) Sheet web spider D) Argiope spider

Special circumstances exist for the medical assistant concerning collections. These circumstances include all but:

A) ?patients whose accounts are less than 30 days old B) skip patients C) patients under bankruptcy situations D) deceased patients