What male species begins to grow collars of fur at about 18 months?
primary succsetion occurs when a new community begins to form in an area where no community exists before. the prosess begins with the colonization of the ares by pioneer species. these plants are suited to grow in barren areas, rocky areas. over time, they help to break down the rocks into the soil. an example of a pioneer plant would be lichen.
Pioneer Species. Mosses are bryophytes and are often considered a "pioneer species" that will establish itself first in a forest that has been cleared by a forest fire. Ferns and other vascular plants are the "fuel" of the fires and burn out. Then when the forest begins to grow again, the non-vascular plants like the mosses (bryophytes) will grow first.
Boys: Pubic hair begins to grow, armpit hair, testicles enlarge, penis grows longer and thicker, voice deepens, muscles grow, legs grow, sweat and perspiration, spots and zits, moods, Girls: Pubic hair begins to grow, breasts grow, armpit hair, ovaries mature, uterus expands, hips widen. Menstruation begins. Spots and zits, moods,