Question

The introduction of alien species usually enhances biodiversity by adding stability to native ecosystems.

Hint:

Alien species invasion is one of the four major causes of biodiversity loss, collectively known as "The Evil Quartet."

Answer 1

Step 1: Understanding the Concept:
Alien (exotic) species are those introduced from a different geographical region to a new environment.
Step 2: Detailed Explanation:
Alien species often lack natural predators in their new environment.
This allows them to grow exponentially and outcompete native species for resources (food, space).
This often leads to the decline or extinction of indigenous species, thereby decreasing biodiversity rather than enhancing it.
Examples include Water Hyacinth (Eichhornia) and Nile Perch in Lake Victoria.
Step 3: Final Answer:
False.