Producers,consumers,and decomposers are which type of components of an ecosystem?

If a grasshopper is eaten by a frog,then the energy transfer will be from

An ecosystem includes

Three of the following components belong to one group,while one component is different from the group. Which component is the odd one out?

What is the physical environment of an ecosystem called? Give one example.

What is meant by 'non-biodegradable' waste? Identify biodegradable waste from the following:
Empty packet of chips,empty plastic bottle of mineral water,empty paper box of sweets,empty tin of a cold drink.