Question

Biodiversity is the number of species...

a. of animals living within an ecosystem.
b. of plants and fungi living within an ecosystem.
c. of bacteria and protists living within an ecosystem.
d. living within an ecosytem.

Answer 1

Biodiversity includes all forms of life within an ecosystem and refers to species diversity, genetic diversity, and ecosystem diversity. The correct option for the given question is 'd. living within an ecosystem,' which accounts for all kinds of life, not just specific subsets.

Step-by-step explanation:

Biodiversity is the number of species living within an ecosystem. It encapsulates not only the variety of species, which includes animals, plants, fungi, bacteria, and protists, but also the genetic variations within these species and the different ecosystems they form. This broad definition confirms that the correct answer to the student's question is d. living within an ecosystem, as it encompasses all forms of life, not just a specific group.

Types of biodiversity include species diversity, genetic diversity, and ecosystem diversity. Species diversity is often the most common measure and scientists have identified about 1.9 million species, with estimates of the total ranging from 5 to 30 million species. Genetic diversity looks at the variation within the genetic makeup of these species.

Ecologists traditionally measure biodiversity by considering both the number of species and their relative abundance, although other measures of biodiversity at various organizational levels are also used by biologists focusing on conservation efforts.

Answer 2

Biodiversity refers to a varitety if life in the world, or habitate, ecosystem.
So the answer that is best to choose would be: D Living with in an eco system.