Q: Valence electrons also determine how wellif at allthe atoms of an element conduct what? Read this paragraph and choose the correct option from the provided answers: Valence electrons also determine how wellif at allthe atoms of an element conduct electricity. The copper wires in the cable in the Figure below are coated with plastic. Copper is an excellent conductor of electricity, so it is used for wires that carry electric current. Plastic contains mainly carbon, which cannot conduct electricity, so it is used as insulation on the wires. Choices: - water - pollution - light - electricity A:
electricity

Q: What protects reptiles from drying out? Read this paragraph and choose the correct option from the provided answers: Reptiles also have several adaptations for living on land. They have a skin covered in scales to protect them from drying out. All reptiles have lungs to breathe air. Reptiles are also amniotes , which means their embryos are surrounded by a thin membrane. This membrane protects the embryo from the harsh conditions of living on land. Reptile eggs are also surrounded by a protective shell, which may be either flexible or inflexible. Choices: - sweat - skin - hairs - scales A:
scales

Q: Q: Although it is the easiest to observe, what property is not ideal as a sole way to identify minerals? Read this paragraph and choose the correct option from the provided answers: Color is probably the easiest property to observe. Unfortunately, you can rarely identify a mineral only by its color. Sometimes, different minerals are the same color. For example, you might find a mineral that is a golden color and think it is gold. But it might actually be pyrite, or "fool's gold," which is made of iron and sulfide. It contains no gold atoms. Choices: - temperature - density - composition - color A:
A: color

Question: Q: What are commonly used to control insect pests, but can have harmful effects on the environment? Read this paragraph and choose the correct option from the provided answers: Insecticides are commonly used to control insect pests, but they can have harmful effects on the environment. Choices: - toxins - fertilizers - Herbicides - insecticides A:
Answer: insecticides

*Question*
Q: In addition to insects, what large invertebrate phylum includes animals such as spiders, centipedes, and lobsters? Read this paragraph and choose the correct option from the provided answers: Arthropods are invertebrates in Phylum Arthropoda. There are more than a million known species of arthropods. However, scientists estimate that only about a tenth of all arthropod species have been identified. In addition to insects, arthropods include animals such as spiders, centipedes, and lobsters. You can see why arthropods were successful both in the water and on land, by watching these excellent videos:. Choices: - onychophora - fungi - ostracods - arthropoda A:
**Answer**
arthropoda

Q: The mass percentage of a solution component is defined as the ratio of the component's mass to ________? Read this paragraph and choose the correct option from the provided answers: Mass Percentage Earlier in this chapter, we introduced percent composition as a measure of the relative amount of a given element in a compound. Percentages are also commonly used to express the composition of mixtures, including solutions. The mass percentage of a solution component is defined as the ratio of the component's mass to the solution's mass, expressed as a percentage: mass percentage =. Choices: - enough ' s mass - solvent's mass - liquid's mass - solution ' s mass A:
solution ' s mass