Question

At the sea bottom, there are bacteria that make use of heat supplied by earths interior to prepare food. So, they are the primary producers. Other organisms feed on these primary producers and subsequent secondary producers. So, the heat from earth supports wide ranging deep water marine organisms. But the productivity is too low compared to ocean surface

Answer 1

The total rate of solar energy conversion into carbohydrates (total photosynthesis) is gross primary productivity. ... The net rate at which energy is stored as plant biomass is net primary productivity. The energy stored in net primary production (NPP) becomes available to heterotrophs.

Answer 2

❤️✌️❤️At the sea bottom, there are bacteria that make use of heat supplied by earths interior to prepare food. So, they are the primary producers. Other organisms feed on these primary producers and subsequent secondary producers. So, the heat from earth supports wide ranging deep water marine organisms. But the productivity is too low compared to ocean surface