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
The answer is d / watwe molecules connect through hydrogen bonds
that would be your tonsils.
Glucose provides places with needed food called photosynthesis
Favorable
Traits that enhance survivability and reproduction, to be more specific.<span />