Suppose That for a Certain Experiment $P ( A ) = \frac { 1 } { 3 }$

question 173

Essay

Suppose that for a certain experiment $P ( A ) = \frac { 1 } { 3 }$ and $P ( B ) = \frac { 1 } { 4 }$ , and events $A$ and $B$ are mutually exclusive. Find $P ( A \cup B )$ .

---

Definitions:

Immature Ecosystems

Ecosystems in the early stages of development, which have yet to reach a stable climax community and are characterized by rapid changes in species composition and structure.

Food Webs

A food web consists of all the food chains in a single ecosystem.

Species Diversity

The variety and abundance of different species within a given ecosystem, essential for maintaining ecosystem health and resilience.

Terrestrial Ecosystems

Ecosystems found on land, characterized by distinct biotic (living) and abiotic (non-living) components, interacting in a specific area.