True or false. animals vary tremendously in structure. nevertheless, they can be categorized into a few basic body plans based on body symmetry, number of embryonic germ layers, type (or absence) of body cavity, and characteristics of embryonic development.

True

Explanation:

Animals can be categorized into 3 based on body symmetry

Animals can be categorized into 2 based on number of embryonic germ layer;

Animals can be categorized based on presence/absence of body cavity or coelom;

Animals can be categorized into 2 based on characteristics of embryonic development;

i think the correct answer from the choices listed above is option c. the statement that is correct about   the cave and geyser would be that the cave is formed when groundwater reacts with the limestone in rocks and the geyser is formed when groundwater gets heated. hope this answers the questio