English Answer:
Coral reefs are made of a living layer of coral on top of the skeletons of previous generations.
So they are primarily made of non living coral
But they are referred to living reefs as they continue to grow and live.
They consist of mainly living corlas.
the abiotic factors of the Mississippi are mainly rocks,sand,and many other non-living organisms
Sand
Mainly the air, the water, and the rocks and soil.
The securities held as assets by the Federal Reserve Banks consist mainly of
Romans (?)
There are several things in the environment that are biotic. They mainly consist of plants and animals. Biotic means living things.
Ground tissue
it consists of cellulose...
keratin
Gazelles mainly prefer living in bushy savannas or open grassland. Gazelles habits consist of grazing all throughout the day and simply roaming the area.
yup...some of the most primitive animals still alive today are crynoids, which mainly inhabit coral colonies...stoney corals have a calcium skeleton which grows in small increments (mm's per year)...unfortunaley,, the majority of stoney corals are undergoing a rapid extinction, exibiting bleaching (where the live animal dies leaving only the white skeleton behind...many scientists contribute pollution pesticide runoff and global warming...soft coral do not have a calcium skeleton and are mainly classified as polyps or mushroom corals...all corals (especially stoney corals) need nutrient poor clean water to thrive, as well as basically unchanging water temperatures.
George Washington