Answer the following question given this paragraph: An allergy occurs when the immune system attacks a harmless substance that enters the body from the outside. A substance that causes an allergy is called an allergen. It is the immune system, not the allergen, that causes the symptoms of an allergy. Q: What occurs when the immune system attacks a harmless substance that enters the body from the outside? Choices: - panic attack - nausea - plague - allergy A:
allergy
Answer the following question given this paragraph: Electronic components are the parts used in electronic devices such as computers. Types of electronic components include diodes, transistors, and integrated circuits. Q: What are the parts used in electronic devices such as computers called? Choices: - batteries - digital components - chargers - electronic components A:
electronic components
Q: Answer the following question given this paragraph: The haploid life cycle ( Figure below ) is the simplest life cycle. It is found in many single-celled organisms. Organisms with a haploid life cycle spend the majority of their lives as haploid gametes. When the haploid gametes fuse, they form a diploid zygote. It quickly undergoes meiosis to produce more haploid gametes that repeat the life cycle. Q: What is the simplest life cycle? Choices: - diploid life cycle - binary life cycle - metamorphic cycle - haploid life cycle A:
A: haploid life cycle
Question: Answer the following question given this paragraph: Figure 2.9 Two or more atoms may bond with each other to form a molecule. When two hydrogens and an oxygen share electrons via covalent bonds, a water molecule is formed. Q: Two or more what may bond with each other to form a molecule? Choices: - particles - clouds - quarks - atoms A:
Answer: atoms
*Question*
Answer the following question given this paragraph: Population density just gives the average number of individuals per unit of area or volume. Often, individuals in a population are not spread out evenly. Instead, they may live in clumps or some other pattern (see Figure below ). The pattern may reflect characteristics of the species or its environment. Population distribution describes how the individuals are distributed, or spread throughout their habitat. Q: The average number of individuals per unit of area can be expressed as what? Choices: - the percent of population - percent density - total density - population density A:
**Answer**
population density
*Question*
Answer the following question given this paragraph: What do these two photos have in common? They both represent electromagnetic waves. These are waves that consist of vibrating electric and magnetic fields. They transmit energy through matter or across space. Some electromagnetic waves are generally harmless. The light we use to see is a good example. Other electromagnetic waves can be very harmful and care must be taken to avoid too much exposure to them. X rays are a familiar example. Why do electromagnetic waves vary in these ways? It depends on their properties. Like other waves, electromagnetic waves have properties of speed, wavelength, and frequency. Q: Vibrating electric and magnetic fields make up what kinds of waves? Choices: - seismic - eletrical - mechanical - electromagnetic A:
**Answer**
electromagnetic