Select all the correct answers. Which sentences describe disadvantages of burning fossil fuels instead of using hydrogen fuel cells?
Burning fossil fuels contributes to climate change.
Burning fossil fuels takes place inside expensive fuel cells.
Fossil fuels aren’t widely available, but pure hydrogen is.
Fossil fuels are nonrenewable.

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Explanation:

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prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.