A planetary nebula is a (ring-shaped) type of nebula formed by an expanding shell of gas around an aging star. *a planetary nebula is a type of nebula*. im not completely certain though. i might be wrong.

7 0

3 years ago

Read 2 more answers

As a result of shifting plates, such as the Caribbean and North American plates and the South American End of exam and Nazca pla

Margaret [11]

The answer is C. volcanoes and earthquakes.

4 0

2 years ago

Read 2 more answers

In his study of pea plants, Gregor Mendel used which method to produce offspring?​

In his study of pea plants, Gregor Mendel used which method to produce offspring?