Answer the following question given this paragraph: Roots absorb water and minerals and transport them to stems. They also anchor and support a plant, and store food. A root system consists of primary and secondary roots. Each root is made of dermal, ground, and vascular tissues. Roots grow in length and width from primary and secondary meristem. Q: What system transports minerals and water in a plant? Choices: - leaves - stamen - flowers - roots A:
roots
Answer the following question given this paragraph: Melting and boiling points are somewhat unique identifiers, especially of compounds. In addition to giving some idea as to the identity of the compound, important information can be obtained about the purity of the material. Q: What is the boiling and freezing point of water in celcius? Choices: - 100 degrees c and 32 degrees c - 212 degrees c and 0 degrees c - 212 degrees c and 32 degrees c - 100 degrees c and 0 degrees c A:
100 degrees c and 0 degrees c
Q: Answer the following question given this paragraph: Gamma rays are electromagnetic waves. Electromagnetic waves are waves of electric and magnetic energy that travel through space at the speed of light. The energy travels in tiny "packets" of energy, called photons. Photons of gamma energy are called gamma particles. Other electromagnetic waves include microwaves, light rays, and X rays. Gamma rays have the greatest amount of energy of all electromagnetic waves. You can learn more about gamma radiation at this URL: http://www. youtube. com/watch?v=okyynBaSOtA. Q: Electromagnetic waves are comprised of what two types of energy? Choices: - solar and kinetic - kinetic and electric - magnetic and gravitational - electric and magnetic A:
A: electric and magnetic
Question: Answer the following question given this paragraph: The convection zone surrounds the radiative zone. In the convection zone, hot material from near the Sun's center rises. This material cools at the surface, and then plunges back downward. The material then receives more heat from the radiative zone. Q: Hot material from near the sun's center rises in which zone? Choices: - thermosphere - radiative zone - drifting zone - convection zone A:
Answer: convection zone
*Question*
Answer the following question given this paragraph: HFCs are used as a replacement for CFCs. The molecular structure of HFC134a is shown in this ball-and-stick model. Q: Hfcs are used as a replacement for what? Choices: - nitrofluorocarbons - pollutants - gases - cfcs A:
**Answer**
cfcs
Q: Answer the following question given this paragraph: Elements and Compounds Any sample of matter that has the same physical and chemical properties throughout the sample is called a substance. There are two types of substances. A substance that cannot be broken down into chemically simpler components is an element. Aluminum, which is used in soda cans, is an element. A substance that can be broken down into chemically simpler components (because it has more than one element) is acompound (Figure 1.2 "The General Steps of the Scientific Method"). Water is a compound composed of the elements hydrogen and oxygen. Today, there are about 118 elements in the known universe. In contrast, scientists have identified tens of millions of different compounds to date. Q: Any sample of matter that has the same physical and chemical properties throughout the sample is called what? Choices: - element - molecule - type - substance A:
A: substance