The term "biodiversity" is often misunderstood. It goes beyond just counting species and individuals; it includes all living things, genes, interactions, and ecosystems. Biodiversity is crucial for life on Earth. Diversity is just a part of biodiversity. So, it's correct to say "plant diversity" or "animal diversity", but not "plant biodiversity" or "animal biodiversity". The term was first discussed in the 1980s and is essential for maintaining life on our planet.