Question: What is the missing first step of the following process: - Carbon dioxide from the burning fossil fuels enter the atmosphere - The make-up of the atmosphere changes - Some energy from the sun cannot escape back through the changed atmosphere - The earth begins to heat because of the extra trapped energy - Human beings cut down trees - Human beings do not re-plant the trees - Trees cannot help take the extra carbon dioxide from the atmosphere - The extra trapped energy starts to change the earth's short term weather - Eventually the long-term climate patterns start to change -
Answer: Human beings burn fossil fuels (oil, gas, etc.)

Question: What is the missing first step of the following process: - Recycling trucks pick up the items that are able to be reused - The recyclable items travel to a recycling plant - The items are sorted by what they are made of - The items are broken down into small parts - The small parts are melted to make new raw parts - The raw parts are sold to manufactures to make new items.
Answer: Items that can be reused are placed into recycling containers

Question: What is the missing first step of the following process: - Magma rises - Collects inside magma chambers underneath a volcano - Pressure builds in the magma chambers as they fill - Gain energy for eruption - Some of the energy is converted into seismic activity (earthquakes) - If the magma building in the volcano is thick and sticky it will trap gases - Results in an explosive eruption when the pressure becomes too intense - If the magma is thin and runs - The magma results in a low-pressure, slow-moving flow of magma instead of a violent eruption -
Answer:
Magma is formed when rock melts inside the Earth's crust