Part 1: Match each vocabulary word with its definition. You may have to look up definitions, H 1. Where an organism lives Non-living 3. Balance; stay the same 4. Living 5. One individual 6. An organism's job in the environment 7. Self-feeding; can make its own food 8. Same species, same place, same time 9. Reactions that require energy to build or break down material 10. Invasive species; does not belong in an area 11. All interacting populations 12. Occurs when two organisms occupy the same niche 13. Cannot make its own food 14. Biotic and abiotic factors interacting 15. Water vapor enters atmosphere through plant leaves Al. Abiotic B. Autotroph C. Biotic D. Community E. Competition F. Ecosystem G. Exotics H. Habitat I. Heterotroph J. Homeostasis K. Metabolism L. Niche M. Organism N. Populatior 0. Transpira

1. Where an organism lives   Habitat

2. Non-living Abiotic

3. Balance; stay the same Homeostasis

4. Living Biotic

5. One individual Organism

6. An organism's job in the environment Niche

7. Self-feeding; can make its own food Autotroph

8. Same species, same place, same time population

9. Reactions that require energy to build or break down material Metabolism

10. Invasive species; does not belong in an area Exotics

11. All interacting populations community

12. Occurs when two organisms occupy the same niche Competition

13. Cannot make its own food Heterotroph

14. Biotic and abiotic factors interacting Ecosystem

15. Water vapor enters atmosphere through plant leaves Transpiration

Explanation:

Habitat is a place where an organism lives. Abiotic refers to non-living part of environment. Autotroph are those organisms that make their own food. Biotic is the living part of the environment. Community forms when different population combines together. Competition occurs when two organisms are present the same niche. Ecosystem is a place where biotic and abiotic factors interacting with each other. Exotics refers to invasive species that does not belong to that area. Habitat refers to a place where organisms live. Heterotroph are the organisms that feeds on other animals. Homeostasis is the balance in the environment. Metabolism are the reactions that require energy to build or break down materials in the body.  Niche is defined as the job of an organism in the environment . Organism refers to a single individual. Population refers to the same species that live in a particular geographic area at the same time. Transpiration is the removal of water from the plant body/

Surfactant is a liquid produced by the alveoli in the lungs to keep the lungs from collapsing.

Explanation:

Surfactant is a fluid composed of lipids and proteins produced in the lungs that keeps the airways open and prevent the lung from collapsing. It is secreted by the alveolar epithelial type-II (AT-II) cells of the tiny air sacs found in the lungs called alveoli. It prevents the collapse of alveoli under the surface tension by reducing the surface tension at the interface between air and the aqueous fluid lining the alveolar surfaces.  If enough surfactant is not present, the surface tension causes the tissue surrounding the alveoli to stick together after each exhalation and results in the collapse of alveoli.

Usually, in unborn babies, the production of surfactant starts at about 6 months of pregnancy and the surfactant helps the babies to breathe in the air immediately after delivery. But a premature baby can not produce enough surfactant and it results in the collapse of alveoli with each breath. The damaged alveolar cells collected in the airways affect breathing and the baby takes in less oxygen. This disorder is known as respiratory distress syndrome (RDS).

The level of carbon dioxide in the blood increases and results in acidosis which affects other organs in the body. Since the premature babies having RDS need extra oxygen and help with breathing, the treatment methods include providing extra oxygen through CPAP, placing a breathing tube into your baby's trachea, providing artificial surfactant and ventilator support.