Problem: - The glucose and oxygen create carbon dioxide - The cells release energy - The cells don't have enough oxygen to repeat this - The cells obtain more oxygen from the air - The cells repeat this process. What might be the first step of the process?

A: Cells obtain glucose and oxygen

Problem: - The cans are transported to a facility - The cans are shredded by a machine - The cans are heated to 1400 degrees to melt them - The molten metal is poured into molds - The molds are flattened and rolled into sheets to reuse. What might be the first step of the process?

A: Put the aluminum can into a recycle bin

Problem: - Pack essential items in your suitcase such as underwear/socks - Pack weather appropriate clothing in the suitcase - Always bring a jacket or two - Always bring one semi-formal outfit for a nice dinner - Zip up the bag and be ready to go. What might be the first step of the process?

A: Determine the weather where you are going

Problem: - The plant roots begin to grow - Break apart the rock - The plant acids dissolve parts of the rock - The rocks are broken into more and more pieces - Erosion starts to occur. What might be the first step of the process?

A:
A plant grows near or on a rock