TASK DEFINITION: You are given a sentence and your task is to generate another sentence that supports the given input.
PROBLEM: ANAPHASE-- The microtubules from the centrosomes pull on the centromere of each chromosome and pulls the sister chromatids apart .

SOLUTION: During the anaphase phase, sister chromatids separate and the centromeres divide.

PROBLEM: Most ecosystems on Earth derive their energy either directly or indirectly through the Sun and the process of photosynthesis.

SOLUTION: Most of the energy used by living things comes either directly or indirectly from the sun.

PROBLEM: Hormones act on parts of the body by sending chemical signals through receptors on or inside cells.

SOLUTION:
Hormones send signals through your body.