$A$ bear that eats a fish that further ate bugs that ate algae is a

Solar energy is converted into chemical energy by plants,and this chemical energy is converted into kinetic or heat energy in animals. This process demonstrates:

Maximum contribution of $O_2$ is from

What is true about the phosphorus cycle?
$I.$ Rocks are the natural reservoirs of phosphorus.
$II.$ Weathering of sedimentary rocks makes phosphate available to the soil.
$III.$ Herbivores and carnivores obtain phosphorus from plants directly or indirectly.
Choose the correct option.

Secondary producers are

Which light is transmitted by water?