Answer:
The life cycle of plants is composed of sporophye generation and gemetophyte generation. They show alternation of generation in which gametophytr produce gametes that develop into sporophytic plant. Sporophye produce spores that develop into gametophyte plants.
Example:
Bryophytes, pinus etc
Oxygen.
Oxygen was fatal when organisms started using photosynthesis, this event was known as the Great Oxidation Event.
D is the answer. Since it’s caused by a subduction.
The thickness of the uterine lining , becomes very thick...because when the level of hormone progesterone reaches its highest levels. according to Dr.X on yahoo answers.
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