
Last option: Preserve an ecosystem

• The establishment of a bird reservation is a way to preserve an ecosystem because reservation provides suitable environment to organism. A healthy ecosystem means large number of biodiversity.
Answer:
Mutualistic means that both organisms benefit.
Explanation:
The acacia tree provides shelter and food to the ants, while the ants protect the tree from other animals.
Answer:
The given statement is False.
Human health is affected by the environment limiting factors. The limiting factors like food, water and some other resources are responsible for the human health and hygiene. The both the biotic and abiotic factors are responsible for the human health.