How do biozones scientists? choose all that apply. a) the relative age of the rock can be determined by the types of fossils it contains. b) rock layers in different locations that contain the same fossils may be considered the same age. c) a biozone can trace the path of evolution over time. d) a specific biozone can indicate a particular type of past environment.

 C). A biozone can help trace the path of evolution over time.

Biozone is a stratigraphic unit which contains fossils in layers of strata existed in a particular geologic period.  It is named as biozone because it depicts the number of biological taxa existed in particular strata. Therefore, the variation in features within taxonomic groups in biozones can give indication of evolution with respect to time.  

answer; both surfaces of the membrane are nonpermeable

interphase

the period of cell growth when the cell synthesizes new molecules and organelles. the cell is not dividing and it constitutes the majority of the time spent in the cell cycle

prophase

changes occur in the nucleus and cytoplasm. the chromatin condenses to form structures (sister chromatids) visible with a light microscope and the mitotic spindle begins to form, but the nucleus is still in tact

prometaphase

the nuclear envelope fragments and the spindle microtubules attach to the kinetochores of the sister chromatids

metaphase

all the cell's duplicated chromosomes are lined up at an imaginary plane equidistant between the poles of the mitotic spindle

anaphase

begins when sister chromatids separate from each other and ending when a complete set of daughter chromosomes arrives at each of the two poles of the cell

telophase

the daughter nuclei form at the two poles of a cell

cytokinesis

the division of a cytoplasm to form two separate daughter cells. usually occurs during telophase during mitosis. this and mitosis make up to mitotic (m) phase of the cell cycle