By using universal terms and anatomical position when identifying human body parts, there is very little room for error or confusion as to which part you are referring.
This looks like a Desert Biome to me. You can see a scarcity of plants. Spiky, cactus-like plants are also visible. You can also see the colour of the dirt. There is also no visible water source.
Answer: a community
Explanation:
an organism is one
a community is a small group
a niche is what the animal does
a population is the entire species
The nursing action should be checking of residual every four to six hours, follow protocol for slowing or withholding feedings for excess residual volumes in which some facilities hold for residual volumes of 100 or 200 ml then restart at the lower rate after a period of rest, check pump for proper operation and ensure feeding infused at correct rate.