The respiratory system brings oxygen unto the lungs, while the circulatory system delivers oxygen throughout the body.
They are the “food” requires for plants to undergo photosynthesis which creates glucose (an essential nutrient for all life). And since plants are at the bottom of the food chain, “what they eat” can be commonly found at the bottom too.
Answer:
It stores and transmits genetic information for all life's processes.
It provides instructions that tell cells how to make proteins.
Yes, if your dead you died-