Problem: What is the missing first step of the following process: - A larvae matures inside of the egg - The caterpillar hatches from the egg - The caterpillar eats and grows - The caterpillar spins a coccoon around itself and forms into a pupa - The butterfly forms inside of the coccoon - The mature butterfly emerges from the coccoon - The butterfly mates - The female butterfly lays eggs.

A: A butterfly lays an egg

Problem: What is the missing first step of the following process: - The parent(s) incubate the eggs - The eggs hatch - The mother (and sometimes the father) bird take care of the baby birds - The baby birds grow up and get their flight feathers - The young birds learn to fly and leave the nest - The adult birds find mates and mate.

A: A bird lays eggs in a nest

Problem: What is the missing first step of the following process: - You water the seeds - You wait for the seeds to sprout - You keep the area free of pests and weeds while the plants grow - You thin out the plants as they get bigger to give them space to grow - You remove the vegetables from the plants when they are ripe.

A: You plant vegetable seeds in the ground

Problem: What is the missing first step of the following process: - The water freezes and thaws - Cracks form in the rocks - Cracks also form when rocks heat up - The rocks slowly break down.

A:
Water seeps into rocks