It is useful for an ecologist to identify the keystone species in an ecosystem because the keystone species is important to maintaining the stability of an ecosystem, and any changes in the keystone species population shows that there is changes in ecosystem health.
Answer:
Bacteria are eukaryotes
They have a single DNA,circular chromosome
Explanation:
It's their basic characteristics that they share .
Answer: In all of these carrying capacity would go down substantially.
Explanation: This is because these natural disasters are very detrimental to the environments and would decrease life.