Question

1. what is the primary function of biological filtration in an aquarium? a) to remove debris and waste b) to convert ammonia to nitrate c) to regulate water temperature d) to add oxygen to the water 2. which of the following is not a type of filtration system used in aquariums? a) mechanical b) chemical c) biological d) thermal 3. what is the ideal range for ammonia levels in an aquarium? a) 0.0 ppm b) 0.5 ppm c) 1.0 ppm d) 2.0 ppm 4. which tool is used to measure and prepare the concentration of saltwater water in an aquarium? a) oxymeter b) thermometer c) ph meter d) hydrometer

Explanation:

1. Biological filtration in aquariums relies on beneficial bacteria that convert toxic ammonia, produced by fish waste and uneaten food, into less - harmful nitrate through a process called nitrification.
2. The common types of aquarium filtration systems are mechanical (removes debris), chemical (uses substances like activated carbon), and biological (converts ammonia). Thermal is not a type of filtration system.
3. Ammonia is highly toxic to fish in aquariums. The ideal level of ammonia should be 0.0 ppm to ensure the health and well - being of aquatic life.
4. A hydrometer is used to measure the specific gravity of water, which helps in determining the salt concentration in a saltwater aquarium.

Answer:

1. b) To convert ammonia to nitrate
2. d) Thermal
3. a) 0.0 ppm
4. d) Hydrometer