Answer:
Homeostasis is the ability to maintain internal stability within organism to counteract or reduce the effect of environmental changes. An example is human maintaining an average temperature of 98.6
An autotroph is an organism able to make its own nutritional organic substances using inorganic materials by using photosynthesis or other methods such as chemosynthesis. An example would be plants since they create glucose from photosynthesis by using CO2, sunlight, and water.
A heterotroph is an organism who depends on other organisms to get energy and food since they cannot create their own food. An example would be animals that eat plants or other animals for energy/food.