Which of the following statements about adaptive radiation is correct?
adaptive radiation occurs very slowly over time.
adaptive radiation occurs in the presence of competitors.
adaptive radiation occurs within a single lineage.
adaptive radiation occurs in species that live in one habitat.

Adaptive radiation occurs in species that live in one habitat.

Explanation:

Adaptive radiation is the diversification of species into separate forms that each adapt to occupy a specific environmental niche. It often set in a habitat with new environmental changes, emerging challenges etc

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.