The correct answer is horizon.
Hope I helped.
Autotrophs use photosynthesis to feed itself. An autotrophs is a plant that provides for itself and does not need to prey among other animals.
Starch or glycogen is where energy is stored
The key difference between energy flow and matter cycling is that energy flow shows the energy transmission from one trophic level to next trophic level in food chains while matter cycling shows the flow or cycling of elements through the living and nonliving parts of ecosystems
Actually, the hormone is issued by the gland to go to a certain spot in the body. Like the adrenal glands release the hormone "adrenaline" when you're in a dangerous, or stimulating situation
