Why must ferns live in wet environments?

A first-time pregnant mother is Rh- and her partner is also Rh-. Which one of the following statements is correct?

A small critical care unit forms a team of nurses to implement bedside rounds at shift change. The nurses have researched the efficacy of bedside rounds and have determined that this evidence-based practice will lead to improved communication of patient status. Which model of change is this based on

A population age diagram (age structure diagram) with a broad base that quickly slopes up to a narrow top (shaped like a triangle) would be indicative of ________.

A patient is complaining of chest pain.  Which should be done first?

What is the principal function of photosynthesis?

What is the structure labeled #4?  

What structure IS NOT related to the sense of smell?

Which statement correctly describes the greenhouse effect?

Which of the following groups do NOT contain ANY unicellular organisms? (select all correct answers)