This table shows how the levels of classification have changed with each major scientist. Which number belongs in the space labeled X?

5
7
8
10

According to the cladogram, which organisms have roundworms as a common ancestor?

Biology ! the conversion of inorganic carbon to organic carbon by plants during photosynthesis is known as _[blank]_. filtration immigration reabsorption primary production

How many autosomes are in this human karyotype? how many sex chromosomes?