All the houseflies are eaten by the frog.

The amount of water in the plates has decreased.

The number of frog increases.

All the houseflies decreased.

What is the trend of the change in height of the plants in pots X,Y and Z?

What is the trend of the change in the number of leaves of the plants in pots X,Y and Z ?

Which soil is the most suitable for planting green bean plants ?