It can be observed and tested
Glucose provides energy that can quickly be used to generate ATP if needed by muscle cells. Starches have to be hydrolyzed to make glucose molecules so they would be useful for endurance situations
I believe its D I hope it helps
Endocrine Signaling
Signals from distant cells are called endocrine signals; they originate from endocrine cells. In the body, many endocrine cells are located in endocrine glands, such as the thyroid gland, the hypothalamus, and the pituitary gland.
Answer: definetly A, food webs
Explanation:
the other options are not even related to organisms
