Flows of energy and cycles of nutrients link the biotic and abiotic components of ecosystems into a/an system, ultimately structuring the feeding relationships, or structure of organisms that inhabit them.

What are charcteristics of lithosphere?

How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different

Which type of respiration takes place when there is no oxygen present? a. anaerobic b. mitochondrial c. cellular d. aerobica. anaerobic