Grass necessary to support this ecosystem needs 10 acres it grow but this field has been reduced to 5 acres because a developer has build houses on the other 5 acres explain what the result of this development will be on each of the trophic levels

The population size of organisms of all the trophic level would be reduced.

Explanation:

Reduced grass population size would lead to a reduction in herbivore's population due to lack of food. The population size of carnivores would also reduce due to the reduced population size of their prey (the herbivores). Hence, reduction in grass population would reduce the population size of organisms of all the trophic levels.

In an ecosystem, all the trophic level in a food web are closely interlinked and any change in one level is bound to affect the other levels. The various trophic levels may correspond to producers (such as grass and plants), primary consumers (such as deer), secondary consumers (such as tigers or lions, etc.), etc. If we reduce the land available or necessary for sustaining the ecosystem by half (5 acres instead of 10 acres).