Buildup of organisms means that the species number is pretty high.
Gradual change means that it was a slow, calm time to make the change.
I hope this helps!!
Answer:
Whale shark
Explanation:
The world's largest fish is the whale shark, which can grow to 40 feet long and weigh an average of 20 tons. The sharks are carnivorous, but they aren't likely to take a nibble out of an unwary surfer – they filter plankton through their enormous mouths while swimming at the surface
Acids are substances that provide hydrogen ions (H+) and lower pH, whereas bases provide hydroxide ions (OH–) and raise pH. The stronger the acid, the more readily it donates H+. For example, hydrochloric acid and lemon juice are very acidic and readily give up H+ when added to water. ( source : https://courses.lumenlearning.com/wmopen-nmbiology1/chapter/the-ph-scale/ )
