Which statements about the Milky Way are true? Choose more than one answer. It is constantly moving

Stars and planets make up most of its mass

It contains very little dust and gas

It contains millions of stars

It has a spiral shape

It has an undefined shape

What do science, technology, and disease have to do with each other?

List charasteristics of athenosphere

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.