The possible cause for a decrease in ecosystem productivity is : B. a decrease of the biodiversity o an ecosystem
Decrease in biodiversity means that there will be less organisms that support each other to maintain the balance in the ecosystem, which eventually decrease its productivity
The answer is probably got to be C.
I am not 100% sure but it is most likely D. Also- I like your icon
The correct answer is C. It is a sudden change that causes species to become extinct.
This answer is not correct because evolution occurs over a long period of time, as evidenced by the theories that describe its timeline (including gradualism and punctuated equilibrium). Additionally, evolution does not always involve the extinction of a species, but it can.
Hope this helps!
Answer:
Economic and social differences between the North and the South.
States versus federal rights.
The fight between Slave and Non-Slave State Proponents.
Growth of the Abolition Movement.
Dred Scott Decision.
The election of Abraham Lincoln.
Explanation:
.
