1. an organism that obtains food by eating other organisms.

a. predator
b. decomposer
c. consumer
d. omnivore
e. primary consumer
f. secondary consumer
g. secondary predator
h. photosynthesis
i. food chain
j. tertiary consumer
k. herbivore
l. food web
m. carnivore
n. ecosystem
o. producer
p. invasive species