Organisms that break down dead animals and plants and convert them into nutrients are called
a. decomposer
b. omnivores
c. carnivores
d. Scanvenger

The correct option is a. decomposers.Decomposers are the organisms that break down dead animals and plants and convert them into nutrients. Examples are earthworm, fungi, etc.Omnivores are those which feed on both plants and the flesh of animals.Carnivores are the ones which feed on the flesh of other animals.Scavengers are like decomposers but they only feed on dead plants and animals, not converting them into organic materials.

Answer:

a. decomposer

Hope you could understand.

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Answer (d) may increase or decrease porosity through dissolution or deposition;

Your answer would be 625,000,000.