Question: What is the missing first step of the following process: - Enters the lungs - The oxygen fills the sacs in your lungs - Carbon dioxide is removed from the lungs and exhaled - The oxygen is pass throughout your body.
Answer: Air is taken through the mouth

[Q]: What is the missing first step of the following process: - Chemicals from the acid rain kill plants and trees - The acid rainwater flows into rivers and streams - The chemicals kill fish - The chemicals kill animals that drink the water - Nitrogen builds up - Nitrogen destroys fish and shellfish populations.
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[A]: Acid rain flows through soil

input: Please answer the following: What is the missing first step of the following process: - May come from different sources - The gases remain trapped in the atmosphere - Through the suns light the gases hold in heat and energy - Trap them in our atmosphere - The earth may become warmer this way.
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output: Several types of gases form in the atmosphere

Please answer this: What is the missing first step of the following process: - In this stage the chromosomes become visible and the centrioles separate and move to opposite poles of the cell - In prophase the chromosomes become visible and the centrioles separate and move to opposite poles of the cell - In metaphase the chromosomes line up across the center of the cell and become connected to the spindle fiber at their centromere - In anaphase the sister chromatids separate into individual chromosomes and are pulled apart - During telophase the chromosomes gather at opposite ends of the cell and lose their distinct rod-like shapes - Two new nuclear membranes then form around each of the two regions of DNA and the spindle fibers disappear.
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Answer: Prophase is the first and longest stage of mitosis

Problem: What is the missing first step of the following process: - Over time, more sediment piles on top - The resulting heat and pressure transforms the organic layer into a dark and waxy substance known as kerogen - Left alone, the kerogen molecules eventually crack - The molecules break up into shorter and lighter molecules composed almost solely of carbon and hydrogen atoms - It will turn into either petroleum or natural gas -

A: Dead organic material accumulates on the bottom of oceans, riverbeds or swamps, mixing with mud and sand

input: Please answer the following: What is the missing first step of the following process: - Water is absorbed through roots - Chloroplast cells in leaves contain chlorophyll - Chlorophyll absorbs energy from sunlight - Energy splits water molecules into hydrogen and oxygen - Oxygen gets released into atmosphere - Hydrogen and carbon dioxide used to create glucose - Glucose is food for plants.
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output:
Carbon dioxide passes through stomata in the leaves