With what??????????????????
C. A decrease in the available water.
Without enough water the plant populations will eventually drop.
The types of rock that can form sediment when they are weathered is D. Igneous, sedimentary and metamorphic. (When the molten rock cools it forms an igneous rock. Metamorphic rocks can form from either sedimentary or igneous rocks. The sedimentary particles from which a sedimentary rock is formed can be derived from a metamorphic, an igneous, or another sedimentary rock. All three rock types can be melted to form a magma.)
<span>Pteridophytes (ferns) have true roots and vascular tissue that allows water to move farther
through the plant so that they don't depend on absorption of water held
on the plant as a mass of moss plants would.
Hope this helps!
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It is called amino group maybe
