Answer:
For low-mass stars, after the helium has fused into carbon, the core collapses again. As the core collapses, the outer layers of the star are expelled. A planetary nebula is formed by the outer layers. The core remains as a white dwarf and eventually cools to become a black dwarf.
Answer:
the concept that best represents the situation described here is: Thermal runaway or positive feedback. Higher atmospheric temperatures cause glaciers
Explanation:
Answer:
Luster
Explanation:
Luster discribes the reflection of light off a minerail surface
What are the options for ethnic groups.
Answer:
Al-shabab
Explanation:
Al-Shabab, or “the Youth,” is an Islamist insurgent group based in Somalia. It once held sway over the capital of Mogadishu and large portions of the Somali