When Mapping the Interior of the Sun, Astronomers Must Measure

question 45

Multiple Choice

When mapping the interior of the Sun, astronomers must measure _____ as the photosphere moves up and down.

• A) sunspots
• B) magnetic fields
• C) supergranules
• D) limb darkening
• E) Doppler shifts

---

Definitions:

Sympatric Isolating Mechanisms

Sympatric isolating mechanisms are barriers to breeding that occur when two species share the same habitat but develop behaviors or characteristics that prevent them from interbreeding.

Allopatric Isolating Mechanisms

Biological barriers that prevent species from interbreeding and producing fertile offspring when they are geographically separated.

Equilibrium Isolating Mechanisms

A term not widely recognized as a standard biological concept and may refer to mechanisms maintaining equilibrium in isolated populations; NO.

Hybrid Inviability

A post-zygotic barrier where hybrid offspring fail to develop properly or survive to reproductive age.