Answer:
one of the major function of the skin is a production of vitamin d false.
The rods are responsible for vision in dim-light or dark adaptation by regeneration of visual purple while the cones are responsible for colour vision
<span>Water flows downhill, eroding the host rock to make it smooth. Water cleanses the ironbearing minerals, which helps to delineate the crystal faces. Water boils the rocks that it comes in contact with, causing them to liquefy and slowly cool and harden into a new, stable state. Water interferes with mineral crystallization, thereby delaying the process of metamorphism. Water migrates into host rock carrying ions to stable minerals in order to facilitate growth of new metamorphic minerals. </span>
Explanation:
A keystone species is an organism that helps define an entire ecosystem. By keeping populations of mussels and barnacles in check, this sea star helps ensure healthy populations of seaweeds and the communities that feed on them—sea urchins, sea snails, limpets, and bivalves.
Two possible answers, the plant kingdom or the eukaryotic kingdom because the plant is within this category along with animals.