Question

which depth can light penetrate to the ocean to? 20 m 500 m 2000 m 5500 m

Explanation:

Light penetration in the ocean is limited. In general, most sunlight (photosynthetically active radiation) can only penetrate the upper layers of the ocean. The 20 m depth is within the euphotic zone (the surface layer where there is enough light for photosynthesis). As depth increases, light intensity decreases rapidly. At 500 m, 2000 m, and 5500 m, the light levels are extremely low or non - existent for most practical purposes of light - dependent processes like photosynthesis.

Answer:

20 m