Q: What do mammals conserve heat with? Read this paragraph and choose the correct option from the provided answers: Mammals conserve heat with their hair or fur. It works like the layer of insulation in the walls of a house. It traps warm air next to the skin so it can't escape into the environment. Like the squirrel in Figure below , most mammals can make their hair or fur stand up from the skin. This makes it a better insulator. Mammals also have a layer of insulating fat beneath their skin. Other vertebrates lack this layer of fat. Choices: - fur or muscle - skin or bones - tendons or hair - hair or fur A:
hair or fur

Q: What term is used for darwin's idea that in stable geologic and climatic conditions evolution occurred gradually? Read this paragraph and choose the correct option from the provided answers: When geologic and climatic conditions are stable, evolution may occur gradually. This is how Darwin thought evolution occurred. This model of the timing of evolution is called gradualism . Choices: - elitism - tinkering - canibalism - gradualism A:
gradualism

Q: Q: What type of energy can be used to change the position or shape of an object, thus giving it potential energy? Read this paragraph and choose the correct option from the provided answers: Mechanical energy commonly changes between kinetic and potential energy. Kinetic energy is the energy of moving objects. Potential energy is energy that is stored in objects, typically because of their position or shape. Kinetic energy can be used to change the position or shape of an object, giving it potential energy. Potential energy gives the object the potential to move. If it does, the potential energy changes back to kinetic energy. Choices: - static energy - binary energy - harmonic energy - kinetic energy A:
A: kinetic energy

Question: Q: A chemical property describes the ability of a substance to undergo a specific what? Read this paragraph and choose the correct option from the provided answers: A chemical property describes the ability of a substance to undergo a specific chemical change. A chemical property of iron is that it is capable of combining with oxygen to form iron oxide, the chemical name of rust. The more general term for rusting and other similar processes is corrosion. Other terms that are commonly used in descriptions of chemical changes are burn, rot, explode, decompose, and ferment. Chemical properties are very useful in identifying substances. However, unlike physical properties, chemical properties can only be observed as the substance is in the process of being changed into a different substance. Choices: - weight Change - radiation change - liquid change - chemical change A:
Answer: chemical change

*Question*
Q: Diamond is extremely hard because of the strong bonding between ______ in all directions? Read this paragraph and choose the correct option from the provided answers: Figure 10.43 Diamond is extremely hard because of the strong bonding between carbon atoms in all directions. Graphite (in pencil lead) rubs off onto paper due to the weak attractions between the carbon layers. An image of a graphite surface shows the distance between the centers of adjacent carbon atoms. (credit left photo: modification of work by Steve Jurvetson; credit middle photo: modification of work by United States Geological Survey) You may be less familiar with a recently discovered form of carbon: graphene. Graphene was first isolated in 2004 by using tape to peel off thinner and thinner layers from graphite. It is essentially a single sheet (one atom thick) of graphite. Graphene, illustrated in Figure 10.44, is not only strong and lightweight, but it is also an excellent conductor of electricity and heat. These properties may prove very useful in a wide range of applications, such as vastly improved computer chips and circuits, better batteries and solar cells, and stronger and lighter structural materials. The 2010 Nobel Prize in Physics was awarded to Andre Geim and Konstantin Novoselov for their pioneering work with graphene. Choices: - consistent atoms - hydrogen atoms - liquid atoms - carbon atoms A:
**Answer**
carbon atoms

(Question)
Q: In a scientific investigation, what do you call a direct, physical observation of something or a process? Read this paragraph and choose the correct option from the provided answers: Evidence is a direct, physical observation of something or a process. Choices: - sighting - declaration - reason - evidence A:
(Answer)
evidence