Question

species that provide early warnings of environmental change in a community or an ecosystem are called

• invasive species
• indicator species
• keystone species
• exotic species

Explanation:

Indicator species are sensitive to environmental changes and can provide early - warning signs of alterations in a community or ecosystem. Invasive species are non - native and often cause harm, keystone species have a large impact on the structure of their ecosystem, and exotic species are simply non - native.

Answer:

indicator species