B. Placenta (works with the umbilical cord to provide nutrients to the developing human)!
Answer:
Spanish Flu
Explanation:
About two-thirds of military deaths in World War I were in battle, unlike the conflicts that took place in the 19th century when the majority of deaths were due to disease. Nevertheless, disease, including the 1918 flu pandemic and deaths while held as prisoners of war.
Answer:
Longer life expectancy, lower risk of life and lower mental stress
Explanation:
The biggest difference between foraging and agriculture in the mental health of an individual at that time is the reduction in stress to get food.
Foragers had to hunt animals that could easily kill them, and the certainty of getting food every day was practically impossible. In addition to the danger of hunting animals, they could easily become ill because they could not tell if a animal, fruit or vegetable was safe to consume.
On the other hand farming was much easier and safer, with nutritious and healthy peaceful animals to feed on. With the certainty of food mental stress is drastically reduced.