All organisms need water to live. It is the medium that is used to move nutrients in and waste out, as well as to carry signals from one part of an organism to another. Additionally, plants use water and carbon dioxide to produce carbohydrates, their food source, using energy from the Sun. Without the hydrogen in water, that would be impossible.
Kelp and other producers need it to grow.
Photosynthisis
Water, carbon dioxide, and sunlight
They don't eat any thing they only need sun and water that is why they are at the end of the food chain.
most need sun light, producers, water and other animals
when it rains the plants/producers get water and then they grow.
Producers get the carbon dioxide that they need to make food from the consumers. Consumers and producers swap the gasses that they need to survive.
rain
Consumers need producers to survive
The interaction between the sun and producers is that the producers need the sun to live.
If there were no producers, there would be no consumers, and life would not exist.
No sun means no producers, and no producers mean no animals, water, and oxygen for our bodies, without water and oxygen we won't be able to survive.