Q: - The blood travels into the neophrons - Waste is expelled via the neophrons - The waste goes to the bladder in the form of urine - The clean blood exits the kidneys. What might be the first step of the process?
A: Blood enters the kidney

Q: - Engines produce carbon dioxide - Living things produce waste - Waste decomposes - Decomposition produces methane - Water evaporates - Water vapor joins the atmosphere - Carbon dioxide, water vapor and methane are greenhouse gases - What might be the first step of the process?
A: People breathe and expel carbon dioxide

Q: - The animals living in the forest have fewer places to hide - Predators can now find their prey eaiser - Birds will fly away from the area - Waters warm up which hurts the fish swimming in them. What might be the first step of the process?
A: Forest fires burn forests

Q: - The atoms become unstable - The atoms split - In alpha decay, two protons and two neutrons are released from the atom - In beta decay, a neutron changes into a proton and an electron - The proton joins the nucleus of the atom - The electron is released - What might be the first step of the process?
A:
The nuclei of some atoms have too few or too many neutrons