Oral Grove is the funnel like depression on the pellicle
1. In your neighborhood where you would find most bacteria that causes decomposition is the ditches where you sometimes litter there.
2. Don't know #2, sorry, ask the account LifeIsAMysery, she's really smart!!!
Answer:
A species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.
Explanation:
.Some examples : Sea Otter. The sea otter (shown below) is considered a keystone species as their consumption of sea urchins, preventing the destruction of kelp forests caused by the sea urchin population. ...
.Large Mammalian Predators. ...
.Sea Star
