a. The presence of specific features, which enable a plant or an animal to live in a particular habitat, is called adaptations

Sol: Adaptation is a genetic change that allows a plant or animal to survive in an environment.

b. The habitats of the plants and animals that live on land are called terrestrial habitat.

Sol: Those animals which live on the land are called terrestrial animals. Example, cat, dog, lion, etc.

c. The habitats of plants and animals that live on water are called aquatic. 

Sol: Those animals which live in the waters are called terrestrial animals. Example, fish, turtle, etc.

d. Soil, water, and air are the abiotic factors of a habitat.

Sol: The abiotic factors are the non-living things in the ecosystem. 

e. Changes in our surroundings that make us respond to them are called stimuli.

Sol: Stimuli is something that activates some organism.