Which of the following is an example of a primary consumer gaining energy? a. a caterpillar crawling up a leaf b. a robin swallowing a worm c. a bear eating a salmon d. a squirrel eating a nut

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%

bacterium is not correct

the principle of segregation describes how pairs of gene variants are separated into reproductive cells. from his data, mendel formulated the principle of segregation. we now know that the segregation of genes occurs during meiosis in eukaryotes, which is a process that produces reproductive cells called gametes.