Animal action is physical weathering
Answer:
Changes in the environment may leave individuals less well adapted to compete successfully for resources such as food, water and mates. Sometimes an entire species may become unable to compete successfully and reproduce. These problems can lead to extinction.
Yes it is it usually
entirely
Increases genetic variation, which in and of itself has extreme benefits such as protection against disease, capability to evolve, etc
Answer:
the seeds of plants contain angiosperm (flowering plants) seeds consist of three genetically distinct constituents: (1) the embryo formed from the zygote, (2) the endosperm, which is normally triploid, (3) the seed coat tissue derived from the maternal tissue of the ovule.