Which best describes Mercury's plains?
a. heavily impacted with craters and large rays
b. solidified lava flows that are a uniform gray color
c. a geologically active surface of molten lava
d. solidified lava flows rich in dark basalts
e. a rich layer of soil containing iron and silicate
Question 2
A planetary nebula is a(n) ____.
a. expanding envelope of ionized gas expelled by a dying medium-mass star
b. expanding envelope of neutral gas and dust expelled by a dying medium-mass star
c. contracting envelope of dusty material from planets destroyed by a dying medium-mass star
d. contracting envelope of ionized interstellar medium absorbed by a dying medium-mass star
e. expanding atmosphere of a medium-mass star as it becomes a red giant
Aerial and close-up views of a large biodiversity experiment in Cedar Creek, Minnesota. Each of the
Large intestine.
A strike by 800 women shoemakers in Lynn, Massachusetts, in 1860. In 1851 a Lynn shoemaker had adapt
The large intestine.
Products like Beano contain enzymes that help reduce the production of gas in the large intestine
The Scale of the Very Small and Very Large: Powers of 10