"Double fertilization involves two sperm cells; one fertilizes the egg cell to form the zygote, while the other fuses with the two polar nuclei that form the endosperm."
Answer:
Evaporation – Evaporation happens when heat from the Sun turns liquid water into water vapor (gas). About 90% of the water in the atmosphere comes from evaporation. Most evaporation occurs in the oceans, because they cover so much of Earth's surface. The sweat evaporates into the air.
Explanation:
Dunkleosteus is an extinct genus of arthrodire placoderm fish that existed during the Late Dev Devonian period, about 360-380 million years ago.
A. Compounds
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