Options for the question have not been provided. They are as follows:
A ecosystem.
B community.
C population.
D organism
Answer:
A ecosystem.
Explanation:
- Ecosystem represents all living organisms along with the surrounding environment. Thus, it has both biotic (living) and abiotic (non living) components.
- In the given example, the zebra is interacting with water to survive. Since zebra is a biotic component and water is an abiotic component, their interaction can be described by ecosystem level of organization.
- Organism, population and community level of organization do not include the abiotic factors like water, soil and air.
They include capsular polysaccharides, extracellular proteases, endotoxin (gram-negative anaerobes), and a variety of other toxins. Capsular polysaccharides play an important role in the stimulation of abscess formation by certain anaerobes such as Bacteroides, Porphyromonas, Fusobacterium, and Prevotella!
2.5 million years ago the first genus Homo evolves.
Erosion Prevention Techniques
Plant grass and shrubs. ...
Add mulch or rocks. ...
Use mulch matting to hold vegetation on slopes. ...
Put down fiber logs. ...
Build retaining walls. ...
Improve drainage. ...
Reduce watering if possible. ...
Avoid soil compaction.
