Which statement best describes a keystone species

A keystone species plays a unique and crucial role in the functionality of an ecosystem. Without these species, the ecosystem will be different or can even cease to exist altogether.

Hence, the correct answer is option 4 - it has a strong influence on the ecosystem.

it's the cell cycle, but cytokines is when the cell divides.

theres 3 stages interphase,mitosis,and cytokines.

interphase prepares the cell for division.

mitosis is the process of dividing the cell,it has 4 parts interphase,anaphase,metaphase,and telophase.

lastly there's cytokines,that's when the cell divides into 2 daughter cells