Answer the following question given this paragraph: Afterbirth The delivery of the placenta and associated membranes, commonly referred to as the afterbirth, marks the final stage of childbirth. After expulsion of the newborn, the myometrium continues to contract. This movement shears the placenta from the back of the uterine wall. It is then easily delivered through the vagina. Continued uterine contractions then reduce blood loss from the site of the placenta. Delivery of the placenta marks the beginning of the postpartum periodthe period of approximately 6 weeks immediately following childbirth during which the mother's body gradually returns to a nonpregnant state. If the placenta does not birth spontaneously within approximately 30 minutes, it is considered retained, and the obstetrician may attempt manual removal. If this is not successful, surgery may be required. It is important that the obstetrician examines the expelled placenta and fetal membranes to ensure that they are intact. If fragments of the placenta remain in the uterus, they can cause postpartum hemorrhage. Uterine contractions continue for several hours after birth to return the uterus to its pre-pregnancy size in a process called involution, which also allows the mother's abdominal organs to return to their pre-pregnancy locations. Breastfeeding facilitates this process. Although postpartum uterine contractions limit blood loss from the detachment of the placenta, the mother does experience a postpartum vaginal discharge called lochia. This is made up of uterine lining cells, erythrocytes, leukocytes, and other debris. Thick, dark, lochia rubra (red lochia) typically continues for 23 days, and is replaced by lochia serosa, a thinner, pinkish form that continues until about the tenth postpartum day. After this period, a scant, creamy, or watery discharge called lochia alba (white lochia) may continue for another 12 weeks. Q: What period starts after the baby is born, and the placenta is expelled from the body? Choices: - fetal - postfetal - traumatic - postpartum A:
postpartum
Answer the following question given this paragraph: During the water cycle, water occurs in three different states: gas (water vapor), liquid (water), and solid (ice). Many processes are involved as water changes state in the water cycle. Q: Water in its solid state is commonly known as what? Choices: - carbon dioxide - sea - glass - ice A:
ice
Q: Answer the following question given this paragraph: Figure 9.28 Diffusion occurs when gas molecules disperse throughout a container. Effusion occurs when a gas passes through an opening that is smaller than the mean free path of the particles, that is, the average distance traveled between collisions. Effectively, this means that only one particle passes through at a time. Q: What occurs when a gas passes through an opening that is smaller than the mean free path of the particles? Choices: - precipitation - malformation - dissipation - effusion A:
A: effusion
Question: Answer the following question given this paragraph: The Kyoto Protocol is another worldwide agreement on air pollution. It was passed in 1997. The Protocol focuses on controlling greenhouse gas emissions. Its aim is to control global warming. Q: What does the kyoto protocol focus on controlling? Choices: - carbonate gas emissions - Helium emissions - Ozone emissions - greenhouse gas emissions A:
Answer: greenhouse gas emissions
*Question*
Answer the following question given this paragraph: Fats are solid lipids that animals use to store energy. Examples of fats include butter and the fat in meat. Q: What are considered solid lipids that animals use to store energy? Choices: - acids - sugars - proteins - fats A:
**Answer**
fats
Answer the following question given this paragraph: Evolution happens because of natural selection . Good traits become more common in a population. Bad traits become less common. The deer mouse, species Peromyscus maniculatus gives an example of evolution by natural selection. In Nebraska, this mouse is typically brown. But in places where glaciers dropped lighter sand over the darker soil, the mice are light. Why? Because predators could more easily spot the dark mice on light sand. The lighter mice were more likely to survive and have offspring. Natural selection favored the light mice. Over time, the population became light colored. Enough changes may take place over time that the two types of mice become different species. Q: Evolution happens because of what? Choices: - natural resources - natural change - natural process - natural selection A:
natural selection