Answer the following question given this paragraph: The emission spectrum of hydrogen is discontinuous. The spectrum is made up of discrete lines representing transitions of the hydrogen electron between specific energy levels within the atom. Q: The spectrum is made up of discrete lines representing transitions of the hydrogen electron between specific energy levels within what? Choices: - a rainbow - an element - the molecule - the atom A:
the atom

Answer the following question given this paragraph: Egg production in the ovary is part of the menstrual cycle. The menstrual cycle is a series of changes in the reproductive system of mature females that repeats every month on average. These changes include the development of an egg and follicle in the ovary. Q: What is the name for a series of changes in the reproductive system of mature females that repeats every month on average? Choices: - periodic table - urinary cycle - puberty - menstrual cycle A:
menstrual cycle

Answer the following question given this paragraph: Q: What basic structures take in nutrients from the soil and help the plant survive? Choices: - tissues - stems - leaves - roots A:
roots