Answer:
sea urchin
Explanation:
An echinoderm is an invertebrate animal (without backbones) that belongs to the Echinodermata group. Members of the echinoderm group are characterized by their possession of a star-shaped and spiny-skinned morphology. They are found strictly in marine habitats. They include sea urchins, sea cucumbers etc.
According to this question involving an echinoderm that is covered with movable spines and that eats seaweed, this describes a SEA URCHIN. This is due to the possession of the MOVABLE SPINES by sea urchins. Sea urchins, like other echinoderms, are predatory and feed on seaweed (algae) as well.
Answer:
Explanation:
There are several mountain building processes that are not associated with plate boundaries.
Block mountains for example does not require any of the condition at a plate margin to form. So far the crust begins to elongate by extensional forces, rock blocks drop and some other rise to form series of horsts and grabens.
The most prominent mountains that forms outside non-plate margins involves sedimentary rock formations.
Here, sediments accumulates within a basin where they get compacted and lithified. During episodes of regional uplift, the crust might rise to new levels and the basins would become elevated to towering peaks.
Hydrocarbons,polycyclic aromatic hydrocarbons
Volvox is a polyphylectic genus of the chlorophyte family.
The new root cells come from Behind the root cap