Answer:
d. secondary endosymbiosis.
Explanation:
- When a living cell acquires another organism that eventually becomes a part of this cell, this process is known as primary endosymbiosis.
- When an organism that has already undergone primary endosymbiosis engulfs another eukaryotic organism then this process is known as secondary endosymbiosis.
- Secondary endosymbiosis has been known to occur in plastids because of which they are surrounded by two membranes. This bilayer is present because one of the layers is the original outer membrane of the organism and the other membrane is that of the organism that has been engulfed.
There could be an earthquake.
Hurricane Katrina.
It was the year 2005 when Hurricane Katrina marked its destruction in United States. The damaged caused by this was beyond repairable, there’s a reason why Katrina is marked as one of the most destructive hurricanes of all times in the history of U.S.
The impact hurricane Katrina had on aquatic ecosystem was terrifying. 150,000 acres of coastal wetlands was damaged. Approximately fifty sea turtles nests were lost. Oil, chemicals, and various other hazardous waste which released in the aquatic ecosystem resulted in the death of aquatic habitats. These are just a few examples of the impact the disastrous Katrina Hurricane had in our ecosystem.
The catalyst is consumed by the reaction, so none remains at the end of the reaction, good luck
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