Which of jupiter's galilean satellites is covered in ice and seems to have a liquid ocean underneath that ice, making it a prime candidate for possible life?
a. io
b. europa
c. callisto
d. ganymede

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Matched chromosomes carrying information about the same characteristics in the organism are called

What is the most common structure of volcanoes?