Answer the following question given this paragraph: Earthquake: What Does Magnitude Mean? at http://www. livescience. com/20538-earthquake-magnitude-video. html (2:00). Q: What is the strength of an earthquake called? Choices: - power - waves - force - magnitude A:
magnitude
(Question)
Answer the following question given this paragraph: Mutagenesis may occur spontaneously or be induced. A spontaneous mutation can just happen. These mutations are not caused by an environmental factor, but occur during normal cellular processes. A spontaneous mutation may be due to a mistake during DNA replication or transcription. Mutations may also occur during mitosis and meiosis. A mutation caused by an environmental factor, or mutagen , is known as an induced mutation . Typical mutagens include chemicals, like those inhaled while smoking, and radiation, such as X-rays, ultraviolet light, and nuclear radiation. Table below lists some spontaneous mutations that are common. Q: Induced mutations are caused by environmental factors. what term is used to describe a mutation that has no environmental cause? Choices: - cancerous mutation - evident mutation - numerous mutation - spontaneous mutation A:
(Answer)
spontaneous mutation
Ques: Answer the following question given this paragraph: Q: In some species, what has led to the evolution of alternative male mating behavior and morphology? Choices: - distributive selection - similar selection - sexual process - sexual selection A:
Ans: sexual selection
(Q).
Answer the following question given this paragraph: Protons and neutrons are located in a central nucleus, while electrons orbit about the nucleus. Q: Where are protons and neutrons located? Choices: - outside the nucleus - secondary nucleus - orbitals - central nucleus A:
(A).
central nucleus
Ques:Answer the following question given this paragraph: Cells that are communicating may be right next to each other or far apart. In juxtacrine signaling , also known as contact-dependent signaling, two adjacent cells must make physical contact in order to communicate. Cell communication may also occur over short distances, which is known as paracrine signaling , or over large distances, which is known as endocrine signaling . Q: Cell communication that occurs over short distances is known as what? Choices: - hypersignaling - contraposition signaling - cell echo - paracrine signaling A:

Ans:paracrine signaling
Question: Answer the following question given this paragraph: Q: What is the term for when a species no longer exists? Choices: - reproduction - endangered - survival - extinction A:
Answer:
extinction