Alan made a study on two types of habitats and recorded his observations in the table below. A tick (✔︎) indicates that the observation is seen.
|Observations||Habitat A||Habitat B|
|Pesticides are used on plants||✔︎|
|Butterflies are flying in this area||✔︎|
|Dragonfly nymphs are found at the bottom of the water||✔︎|
|Floating plants are found at the surface of the water||✔︎|
Which of the following do habitats A and B represent?