1. an organism that obtains energy by consuming plants and animals
a. omnivores
b. carnivores
c. hervibores
d. humans
2. an organism that uses an outside source of energy like the sun to create energy-rich food molecules
a. consumer
b. producer
c. decomposer
d. parasite
3. the process of plants using energy from the sun to create the first trophic level is called?
a. photosynthesis
b. chemosynthesis
c. cellular respiration
d. primary producers
4. what is the first source of energy for all food webs
a. plants
b. sunlight
c. mineral in the soil
d. decomposers
5. it is biological community of interacting organisms and their physical environment
a. ecosystem
b. biotic system
c. abiotic system
d. none of the choices
6. what is the term used to describe all living things in an ecosystem
a. biotic factors
b. abiotic factors
c. enviromental factors
d. population
7. these are different groups of organisms that belong to the same species (example: rats, rabbits, snakes)
a. population
b. community
c. producers
d. consumers​