[Q]: What is the missing first step of the following process: - Centrioles separate to move to opposite poles - Metaphase, the chromosomes line up in the center - Anaphase, the chromatids separate - Are pulled apart - Telophase, the chromosomes gather at opposite poles - Two new nuclear membranes form - The cell membranes pinch - Divide into two individual cells -
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[A]: Prophase, the chromosomes become visible

[Q]: What is the missing first step of the following process: - Rain falls - Water is in the area of high elevation - The water creates a stream - The stream moves towards lower elevation - The stream continues along the same path for a long time - The soil and rocks erode where the stream touches them - The stream moves deeper into the soil - The stream is smaller than the eroded area.
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[A]: An area is at a higher elevation than the surrounding area

[Q]: What is the missing first step of the following process: - Through erosion, the stream cuts into the soil and bedrock - Through continuous erosion, a deep gash is cut through - After many years the river may dry up - A dry ravine is left -
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[A]: A stream or river must occur

[Q]: What is the missing first step of the following process: - The spores fall to the ground - The spores germinate - The spores begin to grow mycelium - The mycelium begin to sprout a bud - A new mushroom is formed.
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[A]:
Spores are dispersed into the air by a mature mushroom