Answer: A) numbers of neutrons Explanation: Isotopes are variations of an element that have the same charge as the original element, but a different mass, which is caused by either more/less neutrons in the nucleus.

Answer: A) The most commonly thought of hazard in construction. This hazard includes radiation, extreme temperatures, noise, and vibration. Explanation: A physical hazard is defined as "A factor within the environment that can harm the body without necessarily touching it." Vibration and noise are examples of physical hazards.   Physical hazards include but aren't limited to electricity, radiation, pressure, noise, heights and vibration amongst many others.

Answer: A) Batman Explanation: Superhero Batman shares a name with an oil production Batman, a town in Turkey.

Answer: A) Counting the votes in an election to determine the next governor Explanation: Option A) "Counting the votes in an election to determine the next governor"  is the only one where data gathering is done.   In all other options, data is already collected and now analyzing of data is going on.

Answer: A) Directive principle Explanation:

Answer: A) Sulphur dioxide Explanation: Air pollutants are solid particles, gases, and liquid droplets in the air that can adversely affect ecosystems and the health of humans.   Major ambient air pollutants include toxic metals, polycyclic aromatic hydrocarbons, benzene, particulate matter (PM), nitrogen oxides, sulfur oxides, carbon monoxide, and ozone. Power plants, factories, and vehicle and air traffic are the most important anthropogenic sources of air pollution.   In addition, natural sources such as wildfires and volcanic activity contribute to ambient air pollution.

Answer: A) It is set by multiple levels of the government. Explanation: General education policy is set by multiple levels of the government like Federal, state and local governments.

Answer: A) The Tenth Amendment Explanation: The sources of state power are specifically outlined in the Tenth Amendment of the Bill of Rights.When the Constitution was first proposed, many people were concerned about the federal government become too powerful. A group known as the anti-federalists pushed for a way to legally set aside certain rights and powers to individual states. This amendment was added to satisfy the anti-federalists who were concerned that the Constitution would grant the federal government unlimited power.   The Tenth Amendment states that all powers that are not specifically given to the federal government are reserved to individual states.