Answer the following question given this paragraph: Six atoms are evenly organized around a central atom. Q: How many atoms are evenly organized around a central atom? Choices: - four - five - seven - six A:
six
Answer the following question given this paragraph: Development of Bone Ossification, or osteogenesis, is the process of bone formation by osteoblasts. Ossification is distinct from the process of calcification; whereas calcification takes place during the ossification of bones, it can also occur in other tissues. Ossification begins approximately six weeks after fertilization in an embryo. Before this time, the embryonic skeleton consists entirely of fibrous membranes and hyaline cartilage. The development of bone from fibrous membranes is called intramembranous ossification; development from hyaline cartilage is called endochondral ossification. Bone growth continues until approximately age 25. Bones can grow in thickness throughout life, but after age 25, ossification functions primarily in bone remodeling and repair. Q: What begins approximately six weeks after fertilization in an embryo? Choices: - calcification - elongation - incubation - ossification A:
ossification
Q: Answer the following question given this paragraph: Wavelengths are described by a unit of distance, typically meters. Q: Wavelengths are described by a unit of what? Choices: - weight - direction - speed - distance A:
A: distance
Question: Answer the following question given this paragraph: The use of nuclear fusion for energy has several pros. Unlike nuclear fission, which involves dangerous radioisotopes, nuclear fusion involves hydrogen and helium. These elements are harmless. Hydrogen is also very plentiful. There is a huge amount of hydrogen in ocean water. The hydrogen in just a gallon of water could produce as much energy by nuclear fusion as burning 1,140 liters (300 gallons) of gasoline! The hydrogen in the oceans would generate enough energy to supply all the world's people for a very long time. Q: Unlike nuclear fission, which involves dangerous radioisotopes, nuclear fusion involves what two harmless elements? Choices: - magnesium and helium - hydrogen and oxygen - hydrogen and carbon - hydrogen and helium A:
Answer: hydrogen and helium
*Question*
Answer the following question given this paragraph: Liquid water is formed when water vapor condenses (i. e. , H 2 O(g) H 2 O(l) or when ice melts (i. e. , H 2 O(s) H 2 O(l)). Because water is a molecular substance, it is a poor conductor of electricity in its pure form. However, as we will see later, its conductivity can be improved by the addition of certain substances. Water molecules are polar, and this overall polarity gives rise to many of the properties of water. For example, an interesting effect is seen when water is placed in a static electric field, as shown in the Figure below and the video below. This phenomenon can be explained in terms of the polarity of water molecules. Q: What is type of substance is formed when water vapor condenses or when ice melts? Choices: - toxic water - chemical water - gaseous water - liquid water A:
**Answer**
liquid water
*Question*
Answer the following question given this paragraph: Like fish, amphibians are ectothermic vertebrates. They belong to the class Amphibia. There are three orders:. Q: Which kind of vertebrates are amphibians? Choices: - endothermic vertebrates - enterococci vertebrates - arachnids vertebrates - ectothermic vertebrates A:
**Answer**
ectothermic vertebrates