Yes.
The sun for energy
plants are primary producers that use sunlight to convert carbon dioxide and water into glucose through photosynthesis. This process provides energy and nutrients for other organisms in the food chain. Additionally, plants produce oxygen as a byproduct of photosynthesis, which is essential for the respiration of many organisms.
All organisms are inter dependent on each other
All living things.
grass is a producer because it lives off of the sun. Which is the source of all energy, and other things feed off of grass. the grass just makes the suns energy usable for other organisms
All animals are organisms. All animals are eukaryotes. All animals are heterotrophs - they are dependent on other organisms (e.g. plants) for sustenance.
There is no such thing as a group of 'independent' organisms. All organisms are inter-dependent, like it or not. For example, we are dependent on plants and animals for food.
No -> NASA doesn't mention that at all.
All living organisms use energy to carry out daily functions
Yes almost all ecosystems are dependent on plants creating sugars using the suns energy. Although it could be argued that ecosystems at the bottom of the ocean where small bacteria and underwater life exist and survive using the heat from underwater volcano vents, but then it could also be argued that they require the sun to exist and so then all ecosystems would be dependent on the sun.
Which organisms create all usable food energy on Earth?consumers
Sunlight is vital for the process of photosynthesis. Without photosynthesis, plants die, there is no food for herbivores, and the carbon cycle is not happening. Which means: OXYGEN IS DEPLETED! ALL ORGANISMS DIE.