11. which choice is likely to result in the most competition? a. organisms that are classified in the same phylum b. organisms that live in different ecosystems c. organisms that live in the same area d. organisms that use the same resource

The term autotroph refers to an organism that: a. uses co2 for its carbon source. b. must obtain organic compounds for its carbon needs. c. gets energy from sunlight. d. gets energy by oxidizing chemical compounds. e. does not need a carbon source

How can scientists use the fossil record to find evidence of relationships between different species?

Select the word from the list that best fits the definition apparent movement of a star used to measure its distance from earth