Answer the following question given this paragraph: Four electron groups orient themselves in the shape of a tetrahedron. Q: Four electron groups orient themselves into what shape that has four faces? Choices: - spherical - multicellular - circular - tetrahedron A:
tetrahedron
(Question)
Answer the following question given this paragraph: Chemistry is the study of matter and the changes that material substances undergo. Of all the scientific disciplines, it is perhaps the most extensively connected to other fields of study. Geologists who want to locate new mineral or oil deposits use chemical techniques to analyze and identify rock samples. Oceanographers use chemistry to track ocean currents, determine the flux of nutrients into the sea, and measure the rate of exchange of nutrients between ocean layers. Engineers consider the relationships between the structures and the properties of substances when they specify materials for various uses. Physicists take advantage of the properties of substances to detect new subatomic particles. Astronomers use chemical signatures to determine the age and distance of stars and thus answer questions about how stars form and how old the universe is. The entire subject of environmental science depends on chemistry to explain the origin and impacts of phenomena such as air pollution, ozone layer depletion, and global warming. The disciplines that focus on living organisms and their interactions with the physical world rely heavily on biochemistry, the application of chemistry to the study of biological processes. A living cell contains a large collection of complex molecules that carry out thousands of chemical reactions, including those that are necessary for. Q: What is the study of matter and the changes that material substances undergo. Choices: - physiology - biology - geology - chemistry A:
(Answer)
chemistry
Ques: Answer the following question given this paragraph: Epiphytic roots enable a plant to grow on another plant. For example, the epiphytic roots of orchids develop a spongy tissue to absorb moisture. The banyan tree (Ficus sp. ) begins as an epiphyte, germinating in the branches of a host tree; aerial roots develop from the branches and eventually reach the ground, providing additional support (Figure 30.20). In screwpine (Pandanus sp. ), a palm-like tree that grows in sandy tropical soils, aboveground prop roots develop from the nodes to provide additional support. Q: What type of roots enable a plant to grow on another plant? Choices: - Sickness - endemic - mites - epiphytic A:
Ans: epiphytic
(Q).
Answer the following question given this paragraph: Q: Name the process that produces many copies of a certain gene. Choices: - gene diversion - gene multiplication - gene addition - gene cloning A:
(A).
gene cloning
Ques:Answer the following question given this paragraph: A natural resource is something supplied by nature that helps support life. When you think of natural resources, you may think of minerals and fossil fuels. However, ecosystems and the services they provide are also natural resources. Biodiversity is a natural resource as well. Q: Something supplied by nature that helps support life, including ecosystems as well as minerals and fossil fuels, is called a what? Choices: - artificial resource - fluid resource - visible resource - natural resource A:

Ans:natural resource
Answer the following question given this paragraph: Electromotive Force You can think of many different types of voltage sources. Batteries themselves come in many varieties. There are many types of mechanical/electrical generators, driven by many different energy sources, ranging from nuclear to wind. Solar cells create voltages directly from light, while thermoelectric devices create voltage from temperature differences. Q: Solar cells create voltages directly from light, while thermoelectric devices create voltage from differences in what? Choices: - oxygen - wire width - wattage - temperature A:
temperature