Sperm cells inside the pollen grain travel down the pollen tube and into the ovary which contains the ovules. Fertilization occurs when one of the sperm cells fuses with the egg inside of an ovule
Should be prophase because chromatin coils up, becoming shorter and thicker, thick enough to become visible when stained.
Biological diversity is the variety of species in a given area. If a new species is added there are more species and therefore greater biological diversity and if one goes extinct there are less species and therefore less biological diversity.
Answer:
Cancer causes tumors to grow. A cell that has become cancerous will multiply rapidly and create a tumor.
Explanation:
Answer:
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