1. Paracrine signaling
2. Endocrine system
3. Autocrine signaling
4. Signal transduction
The travel to the galciers is something one can never forget. The aura of the place along with the beauty that one gets to notice is so enriching to entice one to stay there forever. The glaciers are one of the many natural wonders our world has to offer. Formed because of the accumulation of the snow year after year, these glaciers are present in many sizes. Besides, the movement of the glaciers, such as the glacial erosion and deposition leads to the formation of many other attractive features, such as the corries, pyramidal peaks, truncated spurs, and hanging valleys. You must definitely visit these places to give your soul this exciting experience.
Answer:
True
Explanation:
The deep parts of an ocean receive minimal or no sunlight. Hence, the survival of phototropic organisms like plants and algae is impossible or minimal here. Hence, there is a very little diversity in deep oceans. The organisms living here have to feed on dead decaying matter or on each other for survival. Mostly, the organisms living here use dead organisms as food. No other food source is available here.