Species Diversity

To identify the factors contributing to the acceleration in species loss, it's essential to evaluate each listed option:

• (A) Less use of natural resources: This actually has a tendency to conserve, rather than endanger, species as it often means preserving habitats and reducing human impact.
• (B) Introduction of alien species: This is a significant threat. Alien species can outcompete, prey on, or bring diseases to native species, disrupting ecosystems and leading to native species decline.
• (C) Species confined to a particular area: While such species are vulnerable, confinement itself isn't a cause for increased rate of species loss unless coupled with other factors.
• (D) Removal of one species from co-existed species: This can destabilize ecosystems as species often have interdependent relationships crucial for their survival; removing one can lead to the collapse of others.
• (E) Destruction of large landscapes into small areas: Habitat fragmentation reduces available resources and gene flow, making species more vulnerable to extinction.

Upon evaluation, we see options (B), (D), and (E) are directly contributing to the increase in the rate of species loss by introducing competing, destabilizing, and habitat-fragmenting effects. Hence, the correct answer is the combination: (B), (D) and (E) only.