In Science / Junior High School | 2025-08-05

1. Which one of the following expresses the index of diversity in a mathematical way?

A. The vastness or area of an ecosystem

B. The species distribution in a community

C. The distance between two different ecosystems

D. The population of a given species per unit area

2. Which is the correct formula in calculating population density?

A. D population/area

B. D population x area

C. D number of runs/total population

D. D number of runs x total population

3. Which pertains to organisms that no longer exist at the present time, but have existed in the past?

A. Exotic

B. Extinct

C. Endemic

D. Endangered

4. Which pertains to the process of introducing unnatural chemicals that contaminate the air, soil, and seas?

A. Pollution

B. Acidification

C. Eutrophication

D. Neutralization

5. Which of the following causes of extinction is directly brought about by human activity?

A. Glaciation

B. Overharvesting

C. Cosmic radiation

D. Volcanic eruptions

6. Which pertains to the largest number of individuals in a species that an environment sustains for a long period of time?

A. Biodiversity

B. Limiting factor

C. Carrying capacity

D. Population density

Asked by francispauldano157