Underground mining is safer than surface mining.

[1] carries heat to the surface of the mantle while [2] transfers heat by collisions between molecules.

The Earth is about _____ years old.

A patient with end-stage chronic obstructive pulmonary disease (COPD) is admitted to the ICU with increasing dyspnea and confusion. The patient has a history of chronic hypercapnia. Arterial blood gas (ABG) results are as follows: pH: 7.32 PaCO₂: 68 mmHg PaO₂: 54 mmHg HCO₃: 30 mEq/L The nurse notes that the patient is receiving 100% oxygen via a non-rebreather mask. The nurse understands that this high level of oxygen may lead to which physiologic response?a

Case: A trauma patient in the ICU has ongoing bleeding from pelvic fractures. Current labs: Hgb 6.8 g/dL, Plt 18,000/mm³, PT/INR prolonged, aPTT prolonged, fibrinogen 90 mg/dL. The team plans targeted blood product therapy. Instructions: Match each blood product in Column A with the single best indication in Column B.

A patient with end-stage chronic obstructive pulmonary disease (COPD) is admitted to the ICU with increasing dyspnea and confusion. The patient has a history of chronic hypercapnia. Arterial blood gas (ABG) results are as follows: pH: 7.32 PaCO₂: 68 mmHg PaO₂: 54 mmHg HCO₃: 30 mEq/L The nurse notes that the patient is receiving 100% oxygen via a non-rebreather mask. The nurse understands that this high level of oxygen may lead to which physiologic response?a

Ms. Antonova is a 70-year-old woman with a history of hypertension and takes 40mg oral furosemide every morning. She has come to the Emergency Department accompanied by her daughter for a complaint of generalized weakness. Which action is appropriate for the nurse to take?

Case: Ms. L., 72, has HFrEF and increasing dyspnea. Results: BNP 1,200 pg/mL Na⁺ 130 mEq/L, Cr 1.6 mg/dL CXR: interstitial/alveolar edema Echo last month: LVEF 28% Which interpretation is most accurate?

A 62-year-old with pneumonia is in severe respiratory distress: RR 38/min with accessory muscle use, SpO₂ 84% on a non-rebreather at 15 L/min, BP 102/58, HR 128. ABG: pH 7.28, PaCO₂ 58 mmHg, PaO₂ 48 mmHg, HCO₃⁻ 25 mEq/L. The provider announces the need for rapid sequence intubation. Which nursing action is priority?

Case: A 72-year-old with end-stage heart failure is admitted for comfort-focused care. The chart includes a signed DNR and a POLST (Provider Orders for Life-Sustaining Treatment) indicating “comfort measures only; no intubation or ICU transfer.” The client is now very dyspneic and anxious despite low-flow oxygen. Family members say, “Please do everything to keep them alive.” Which nursing action is most appropriate?