Question

freshwater biomes
abiotic factors
freshwater biomes, just like terrestrial biomes, are
composed of both biotic (living) components and
abiotic (non - living) components.

one of the main abiotic factors in aquatic ecosystems is
the presence of sunlight. aquatic plants need sunlight
to carry on photosynthesis just like land plants do.

plants are the producers that start the aquatic food
chain.

what abiotic factor provides the energy
for the aquatic food chain?
fish and frogs
temperature
sunlight

Explanation:

To solve this, we analyze the options:

• "fish and frogs" are biotic (living) factors, not abiotic, so eliminate.
• "temperature" is an abiotic factor but doesn't provide energy for the food chain.
• "sunlight" is an abiotic factor. Aquatic plants use sunlight for photosynthesis (to make food), and plants are producers that start the aquatic food chain, so sunlight provides the energy for the aquatic food chain.

Answer:

C. sunlight (assuming the options are labeled with C for the sunlight option; if the third option is the one with sunlight, then the answer is the option with "sunlight")