Which Force Induces the Core to Contract Inward and Get

question 209

Multiple Choice

Which force induces the core to contract inward and get hotter in massive stars at the conclusion of each episode of nuclear fusion, such as the carbon-, oxygen-, and silicon- fusion cycles?

• A) gravity
• B) gas pressure produced by the very high gas temperatures
• C) electron degeneracy pressure
• D) nuclear attractive force between nuclei and between neutrons and protons

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Definitions:

Environmental Stimuli

External factors or changes in the environment that can elicit responses from organisms.

Monozygotic Twins

Twins that originate from a single fertilized egg, making them genetically identical.

Genetics

The study of genes, genetic variation, and heredity in living organisms.

Epigenetic Study

An area of biology focusing on the mechanisms that cause changes in the expression of genes without altering the DNA sequence itself.