Answer the following question given this paragraph: There are only about 25 living species of lancelets. They inhabit the ocean floor where the water is shallow. Lancelet larvae are free-swimming. The adults can swim but spend most of their time buried in the sand. Like tunicates, lancelets are filter feeders. They take in water through their mouth and expel it through an opening called the atriopore (see Figure below ). Lancelets reproduce sexually and have separate sexes. Q: How do lancelets reproduce? Choices: - asexually - parthenogenesis - aerobically - sexually A:
sexually
Answer the following question given this paragraph: Nervous tissue may become infected by microorganisms. Meningitis , for example, is caused by a viral or bacterial infection of the tissues covering the brain. This may cause the brain to swell and lead to brain damage and death. Q: Which organ of our body is harmed if you get meningitis? Choices: - spleen - lung - heart - brain A:
brain
Q: Answer the following question given this paragraph: This represents a human egg, which is the gamete, or reproductive cell, in females. Notice that is does not have a distinct shape, like a sperm cell has. The egg is a round cell with a haploid nucleus in the center. The egg contains most of the cytoplasm and organelles present in the first cell of a new organism. Q: What term means a reproductive cell, like the human egg in females? Choices: - embryo - zygote - sperm - gamete A:
A: gamete
Question: Answer the following question given this paragraph: Sediments are deposited horizontally so sedimentary rock layers are originally horizontal. Q: What direction are sediments deposited? Choices: - magnetic poles - diagonally - vertically - horizontally A:
Answer: horizontally
*Question*
Answer the following question given this paragraph: When electrons are removed from an atom, that process requires energy to pull the electron away from the nucleus. Addition of an electron releases energy from the process. Q: What is required when electrons are removed from an atom, and released from the process when an electron is added? Choices: - nuclear - proton - fuel - energy A:
**Answer**
energy
Q: Answer the following question given this paragraph: Strategy: A Based on the conductivity of the elements, determine whether each is a metal, a nonmetal, or a semimetal. Confirm your prediction from its physical appearance. B From the compounds each element forms, determine its common oxidation states. C If the element is a nonmetal, it must be located in the p block of the periodic table. If a semimetal, it must lie along the diagonal line of semimetals from B to At. Transition metals can have two oxidation states separated by one electron. D From your classification, the oxidation states of the element, and its physical appearance, deduce its identity. Solution:. Q: Conductivity, oxidation state and physical appearance are properties that help determine whether what are metals? Choices: - atoms - phases - organisms - elements A:
A: elements