Centromeres split apart during anaphase.
spindle fibers pull the to sister chromatids apart.
1. The organisms at lower trophic levels have more consumable energy which provides the whale with more energy that organisms at other trophic levels.
2. Agree
3. Depending on the food chain, organisms can be on multiple trophic levels. For example, lions can be both a tertiary and secondary consumer.
Climate change is the choice that answers your statement
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