7. when two or more species live together in a close, long-term relationship, it is called

8. a symbiotic relationship in which both participating species benefit is called

9. a symbiotic relationship in which one species is neither harmed nor called

answer; i do believe that the correct answer is; ///mendelian genes are at specific loci on the chromosome and, in turn, segregate during meiosis;

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.