Scientists use trophic cycles to study the flow of matter in an ecosystem by observing feeding relationships between organisms. Which of the following statements is most correct regarding the terminology used in trophic cycles? A. Labeling a carnivore as a heterotroph would be correct
B. It is incorrect to refer to an omnivore as a heterotroph
C. Primary producers would include the heterotrophic species.
D. The terms herbivore and autotroph mean the same thing
E. Autotrophs can be correctly labeled as primary consumers

answer; /// the correct )

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )