An aerator is a tool used to aerate soil, which involves adding air to the soil to improve its structure and drainage. The crossword solutions for this term include ANT (3 letters), LOAM (4 letters), BETTA (5 letters), AGRO (4 letters), MARL (4 letters), and HOE (3 letters). Ants are small insects that can help aerate soil by creating tunnels in it. LOAM is a type of soil that is made up of clay, sand, and silt particles and is known for its ability to hold water and nutrients. Betta is a type of fish that can be used to aerate ponds and other bodies of water. Agro is a type of soil amendment that can help improve soil structure and drainage. MARL is a type of soil that is composed of clay and calcium carbonate and is known for its ability to retain moisture. Finally, a HOE is a tool used to break up soil and remove weeds.