The correct answer is D) fern gametophyte bearing only antheridia.
Always remember quadrilateral means 4 sides
Answer:
Spring tides occur when the sun, moon and earth are lined up, and it causes high and low tides to be much higher (moon is full/new). Neap tides occur when the sun, moon, and earth form a right angle this causes regular high and low tides to be much lower (first quarter and last quarter moon). The moons gravity and suns gravity pull the earths crust and ocean water.
Explanation:
They both tried to explain evolution, but Darwin was able to support it with evidence.
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The muscles moved quickly to defend themselves against this new predator by thickening their shells