Question: Factories and mines were not the only places where child labour was prevalent in the early 20th century. Home-based manufacturing across the United States and Europe employed children as well. Governments and reformers argued that labour in factories must be regulated and the state had an obligation to provide welfare for poor. Legislation that followed had the effect of moving work out of factories into urban homes. Families and women, in particular, preferred it because it allowed them to generate income while taking care of household duties.
Is there an answer to this question: Children were employed in the home, factories and were else in the 20th century?

Answer: mines

Question: Animals typically use the color green as camouflage, blending in with the chlorophyll green of the surrounding environment. Green animals include, especially, amphibians, reptiles, and some fish, birds and insects. Most fish, reptiles, amphibians, and birds appear green because of a reflection of blue light coming through an over-layer of yellow pigment. Perception of color can also be affected by the surrounding environment. For example, broadleaf forests typically have a yellow-green light about them as the trees filter the light. Turacoverdin is one chemical which can cause a green hue in birds, especially. Invertebrates such as insects or mollusks often display green colors because of porphyrin pigments, sometimes caused by diet. This can causes their feces to look green as well. Other chemicals which generally contribute to greenness among organisms are flavins (lychochromes) and hemanovadin. Humans have imitated this by wearing green clothing as a camouflage in military and other fields. Substances that may impart a greenish hue to one's skin include biliverdin, the green pigment in bile, and ceruloplasmin, a protein that carries copper ions in chelation.
Is there an answer to this question: What is a chemical that can cause green hue in birds?

Answer: Turacoverdin

Question: Puerto Rico has been discussed as a potential 51st state of the United States. In a 2012 status referendum a majority of voters, 54%, expressed dissatisfaction with the current political relationship. In a separate question, 61% of voters supported statehood (excluding the 26% of voters who left this question blank). On December 11, 2012, Puerto Rico's legislature resolved to request that the President and the U.S. Congress act on the results, end the current form of territorial status and begin the process of admitting Puerto Rico to the Union as a state.
Is there an answer to this question: When did Puerto Rico resolve to request that the United States act on these results?

Answer: December 11, 2012

Question: Historically, the cuisine of Estonia has been heavily dependent on seasons and simple peasant food, which today is influenced by many countries. Today, it includes many typical international foods.[citation needed] The most typical foods in Estonia are black bread, pork, potatoes, and dairy products. Traditionally in summer and spring, Estonians like to eat everything fresh berries, herbs, vegetables, and everything else that comes straight from the garden. Hunting and fishing have also been very common, although currently hunting and fishing are enjoyed mostly as hobbies. Today, it is also very popular to grill outside in summer.
Is there an answer to this question: What food gathering behaviors are now seen as hobbies in modern Estonian culture?

Answer:
Hunting and fishing