Can somebody give me description of the role of these decomposers i'm going to list below: - spiders

- freshwater shrimps

-moss

- spiders

they break down organic material that then provide nutrients for the entire food web.

- freshwater shrimps

Animals like shrimp and crabs can break the materials down to detritus. Then bacteria reduce the detritus to nutrients.

-moss

Moss is considered both a producer and a decomposer because it produces its own food through photosynthesis and helps to break down organic matter into nutrients. ... In the forest, moss carpets the floor and fallen organic matter such as rotting logs. The moss helps to decompose the logs and recycle the nutrients.

Explanation:

what's the rest of the question

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."