Answer the following question given this paragraph: Chromosomal Alterations. Chromosomal alterations are major changes in the genetic material. Q: What term is used to describe major changes in the genetic material? Choices: - generational alterations - eukaryotic alterations - mutational alterations - chromosomal alterations A:
chromosomal alterations
Answer the following question given this paragraph: Alpha and beta decay occur when a nucleus has too many protons or an unstable ratio of protons to neutrons. When the nucleus emits a particle, it gains or loses one or two protons, so the atom becomes a different element. Gamma decay, in contrast, occurs when a nucleus is in an excited state and has too much energy to be stable. This often happens after alpha or beta decay has occurred. Because only energy is emitted during gamma decay, the number of protons remains the same. Therefore, an atom does not become a different element during this type of decay. Q: Alpha and beta decay occur when a nucleus has too many protons or an unstable ratio of what? Choices: - electrons to neutrons - atoms to neutrons - nucleus to neutrons - protons to neutrons A:
protons to neutrons
Q: Answer the following question given this paragraph: Q: The second shell holds a maximum of how many electrons? Choices: - 9 - 12 - 6 - 8 A:
A: 8
Question: Answer the following question given this paragraph: What explains buoyant force? Recall from the earlier lesson "Pressure of Fluids" that a fluid exerts pressure in all directions but the pressure is greater at greater depth. Therefore, the fluid below an object exerts greater force on the object than the fluid above the object. This is illustrated in Figure below . Buoyant force explains why objects may float in water. No doubt you've noticed, however, that some objects do not float in water. If buoyant force applies to all objects in fluids, why do some objects sink instead of float? The answer has to do with their weight. Q: What force explains why objects may float in water? Choices: - warm force - cool force - gravity force - buoyant force A:
Answer: buoyant force
*Question*
Answer the following question given this paragraph: Most reptiles reproduce sexually and have internal fertilization. Q: Most reptiles reproduce sexually and have what type of fertilization? Choices: - additional - external - mechanical - internal A:
**Answer**
internal
(Q).
Answer the following question given this paragraph: Secondary succession occurs in a formerly inhabited area that was disturbed. Q: What occurs when a former inhabited area gets disturbed? Choices: - tertiary succession - primary succession - tropical succession - secondary succession A:
(A).
secondary succession