When the chromosomes come together as homologous pairs, the arms of the sister chromatids may cross over.
What are these crossover points called?

A. chiasma

B. Homologous chromosomes

C. cross-over point

D. BFFs

A. chiasmata is ur answer

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.