GIVING 50 POINTS What are the names given to the process by which carbon molecules are broken down to make carbon dioxide and release a great amount of energy? (Choose all that apply)

the tricarboxylic acid cycle

the Calvin cycle

the citric acid cycle

the Krebs cycle

25. what does meiosis create? haploids or diploid? somatic cells or gametes?

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.