Portland cement is made up of four main compounds: tricalcium silicate (3CaO · SiO2), dicalcium silicate (2CaO · SiO2), tricalcium aluminate (3CaO · Al2O3), and a tetra-calcium aluminoferrite (4CaO · Al2O3Fe2O3).
Answer:
it is b
Explanation:
The 1900 Boxer Uprising in China. The Boxer Uprising was attempt by the members of a Chinese secret society to expel foreigners and foreign influence from China.
Answer:
How do the narrow ribbons of sand that line the Atlantic and Gulf coasts ... Barrier islands protect about 10 percent of coastlines worldwide.Such as reducing coastal erosion, purifying water and providing habitat for fish and birds. New islands can form out in the ocean, either because local sea level.
To protect the coast by blocking wind, water and sand
Explanation:
This would be Medicare. Keep in mine Medicaid and Medicare are similar, but two different programs not to get them mixed up. Medicare has several different parts, and the most common you will see is Medicare part A and Medicare part B. There is a difference in them as some covers for hospital visits, inpatient stays, etc. other part will pay for standard office visits right a doctor.
Answer:
A. an in-depth study of what moviegoers liked and disliked about a new theater
Explanation:
Focused interviews, also known as semi structured interviews, are a research tool used to get qualitative in-depth information from a small sample of respondents. The main advantage of this tool is that when applied by a trained interviewer, it allows the researcher to gather in-depth explanations and points of view from the respondents. The goal with these is not to make generalizations to a wider population, but to understand the respondent's points of view on a particular subject. Since it requires more time and resources to set a focused interview than to give out surveys, samples can't be too large, making this tools ineffective for statewide or nationwide studies. Instead, asking moviegoers about what they like and didn't like from the theater is ideal for these kind of studies, as the samples can be small and you will not only find what they liked or disliked but also why.