What does a seed grow into after germination?

Can a seed germinate in seawater?

What starts when a seed begins to grow?

What protects a seed?

What does a sprout need to grow?

What must a seed have to germinate?

What part of a plant needs sunlight, air and water?

If a desert cactus runs out of water, or a bush on a mountain has little oxygen, or a wild flower lacks warmth in the winter, what will happen?