Answer the following question given this paragraph: All matter is made of tiny particles. Protons, neutrons, and electrons form atoms that bond together to create molecules. Atoms are the smallest units that have the properties of an element. Molecules are the smallest units of a compound. Chemical bonds hold molecules together. Molecules form the different types of minerals. The silicates make up most of Earth's crust. Minerals come together to create the three major rock types. They are igneous, sedimentary, and metamorphic. Igneous rocks form from cooled magma. Sedimentary rocks form from compacted or cemented sediments. Metamorphic rocks are those that have been altered by heat and pressure. These three rock types are the material part of the rock cycle. They are connected by different processes. Different processes convert any type of rock into any other type of rock. These processes are weathering and erosion, crystallization, and burial and pressure, among others. Each rock contains a story of how it formed. For most rocks it is possible to know what it formed from. Q: The smallest units of matter that retain the unique properties of an element are known as what? Choices: - protons - molecules - neutrons - atoms A:
atoms
Answer the following question given this paragraph: A gene pool is the complete set of unique alleles in a species or population. Mutations create variation in the gene pool. Populations with a large gene pool are said to be genetically diverse and very robust. They are able to survive intense times of natural selection against certain phenotypes. During these times of selection, individuals with less favorable phenotypes resulting from deleterious alleles (due to mutations) may be selected against and removed from the population. Concurrently, the more favorable mutations that cause beneficial or advantageous phenotypes tend to accumulate in that population, resulting, over time, in evolution. In fact, without any change in the gene pool, without any new alleles added due to new mutations, evolution could not occur. Genetic change is the driving force of evolution. In fact, evolution can be genetically defined as the change allele frequencies over time. Q: What increases the size of a population's gene pool? Choices: - mass extinction - microbes - natural selection - mutations A:
mutations
Q: Answer the following question given this paragraph: Q: Continental drift also promotes what speciation? Choices: - obligate - mutualistic - macroevolution - allopatric A:
A: allopatric
Question: Answer the following question given this paragraph: Figure 6.17 Centrifuges use inertia to perform their task. Particles in the fluid sediment come out because their inertia carries them away from the center of rotation. The large angular velocity of the centrifuge quickens the sedimentation. Ultimately, the particles will come into contact with the test tube walls, which will then supply the centripetal force needed to make them move in a circle of constant radius. Q: Centrifuges use what to perform their task? Choices: - absorption - jets - magnetism - inertia A:
Answer: inertia
*Question*
Answer the following question given this paragraph: There are several traits shared by all arthropods. Arthropods have a complete digestive system. They also have a circulatory system and a nervous system. In addition, they have special organs for breathing and excreting wastes. Other traits of arthropods include:. Q: What group of animals are the largest arthropods? Choices: - birds - fish - spiders - insects A:
**Answer**
insects
(Question)
Answer the following question given this paragraph: Passive immunity results when antibodies are transferred to a person who has never been exposed to the pathogen. Passive immunity lasts only as long as the antibodies survive in body fluids. This is usually between a few days and a few months. Passive immunity may be acquired by a fetus through its mother's blood. It may also be acquired by an infant though the mother's breast milk. Older children and adults can acquire passive immunity through the injection of antibodies. Q: What happens when antibodies are transferred to a person who has never been exposed to the pathogen? Choices: - acquired immunity - active disease - allergic reaction - passive immunity A:
(Answer)
passive immunity