Question

A species that have significant impact on ecosystem regardless of Its abundance is called
Parasite
Competitor
Keystone species
Consumer​

Answer 1

Answer:

keystone species

Explanation:

Without keystone species, the ecosystem would be dramatically different or cease to exist altogether.

Answer 2

Such species are called keystone species

• They are the species that contribute to the overall definition of an ecosystem.
• They are necessary for the sustenance of ecological community form, as they have an impact on other creatures in the environment.
• They contribute towards deciding the types and quantities of different species.
• The ecosystem would be altered or non-existent without them.
• Examples are - The American Beaver, Sharks, The African Elephant, Grizzly bears etc.