Which of the following occurs during mitosis but not during meiosis I ?
(A) The chromosomes are pulled to opposite
poles of the spindle apparatus.
(B) The chromatids of each chromosome are
separated.
(C) The nuclear envelope breaks down.
(D) Both synapsis and crossing-over take place.
(E) The diploid number of chromosomes is
reduced to the haploid number.

Match each description to the appropriate biome. tropical savanna desert tropical rain forest taiga tundra has sparse vegetation and very cold temperatures located near the equator and contains trees that form dense canopy layers is very hot and dry, and has plants that need little water has cold winters, heavy snowfall and is dominated by conifers has warm temperatures and is dominated by grasses