Critical thinking is the ability to think clearly and rationally about what to do or what to believe. It includes the ability to engage in reflective and independent thinking. Someone with critical thinking skills is able to do the following 1  : understand the logical connections between ideas.  identify, construct and evaluate arguments.
Not Medical Advice: The uterus (which is continuous with the cervix) weighs 2.5 ounces (70 g) on average. It is a mostly solid, although hollow and composed of smooth muscle. It is pear-shaped, and typically measures 3 inches (7.6 cm) in length.
After spending approximately 40 weeks inside the womb, the average newborn weighs 7 1/2 pounds. Most babies weigh between 5 1/2 and 10 pounds. The average length of a newborn is 20 inches (50 centimeters), with a range of 18 to 22 inches. The average head circumference (the distance around the head) is 14 inches (35 centimeters).