Final answer:
Plants provide food, oxygen, and medicines that are essential for human survival.
Step-by-step explanation:
The outputs from plants that are needed for human survival include food, oxygen, and medicines.
Plants are a major source of food for humans, providing essential nutrients such as carbohydrates, proteins, vitamins, and minerals. Additionally, plants release oxygen during the process of photosynthesis, which is crucial for human respiration.
Furthermore, many plants contain medicinal properties and are used to develop drugs and treatments for various diseases and ailments. Examples include the use of willow bark for pain relief (from which aspirin was derived) and the use of the Madagascar periwinkle for cancer treatment.
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