कथनों को पढ़ें और सही विकल्प चुनें: कथन (A): सजीवों के आपसी संबंध और अपने आस-पास के पर्यावरण के बीच का संबंध एक पारितंत्र (ecosystem) का निर्माण करता है। कारण (R): सभी पेड़-पौधे, जीव-जंतु और मानव अपने आस-पास के पर्यावरण पर निर्भर होते हैं।

The presence of large amounts of nutrients in water bodies causes excessive growth of planktonic algae. This specific phenomenon is known as:

Consider the following statements about Mount Kilimanjaro and its environmental concerns: I. Mount Kilimanjaro is a dormant stratovolcano located in Tanzania and is the highest peak in Africa. II. Recent studies indicate that the major threat to Kilimanjaro's biodiversity is deforestation and human encroachment rather than climate change. III. The study recommends the adoption of multi-layered agroforestry systems and the creation of protected nature reserves to preserve local ecosystems. IV. Kilimanjaro lies within the East African Rift System and has experienced continuous volcanic activity in recent decades. How many of the above statements are correct?