Question: Q: Silver, gold, and copper all conduct what very well? Read this paragraph and choose the correct option from the provided answers: The electrical conductivity of a substance is a property that depends only on the type of substance. Silver, gold, and copper are excellent conductors of electricity, while glass and plastic are poor conductors. A larger or smaller piece of glass will not change this property. An intensive property is a property of matter that depends only on the type of matter in a sample and not on the amount. Other intensive properties include color, temperature, density, and solubility. Choices: - light - sound - microwaves - electricity A:
Answer: electricity

Question: Q: What hormone, which is associated with luteinizing hormone and male sexuality, helps bring about physical changes in puberty? Read this paragraph and choose the correct option from the provided answers: What causes puberty to begin? The hypothalamus in the brain "tells" the pituitary gland to secrete hormones that target the testes. The main pituitary hormone involved is luteinizing hormone (LH) . It stimulates the testes to secrete testosterone. Testosterone, in turn, promotes protein synthesis and growth. It brings about most of the physical changes of puberty, some of which are shown in Figure below . In addition to the changes shown below, during puberty male facial hair begins to grow, the shoulders broaden, and the male voice deepens. You can watch an animation of these and other changes that occur in boys during puberty at the Interactive Body link: http://www. bbc. co. uk/science/humanbody/body/interactives/lifecycle/teenagers/ . Choices: - steroids - epinephrine - estrogen - testosterone A:
Answer: testosterone

Question: Q: What is the process of converting atmospheric nitrogen to ammonia called? Read this paragraph and choose the correct option from the provided answers: Choices: - atmospheric fixation - ammonia fixation - oral fixation - nitrogen fixation A:
Answer:
nitrogen fixation