Final answer:
Aconitum, Atropa belladonna, and Oleander are three poisonous plants found in Alberta, which can cause severe health issues if ingested.
Step-by-step explanation:
Aconitum, Atropa belladonna, and Oleander are poisonous plants found in Alberta, posing significant health risks if ingested. Aconitum, known as monkshood or wolfsbane, Atropa belladonna, commonly called belladonna or deadly nightshade, and Oleander all contain toxins that can lead to severe consequences, ranging from gastrointestinal disturbances to cardiac issues. Ingesting these plants may result in symptoms requiring immediate medical attention. Recognizing and avoiding these toxic plants is crucial for preventing accidental ingestion and mitigating potential harm. Awareness of the presence of these harmful flora in the wild is essential to safeguard both human and animal well-being in Alberta's natural environments.