A(n) is a gap in the geologic record where some rock layers have been lost because of erosion.

a. unconformity

b. index layer

c. intrusion

d. superposition

An astronaut floating in space is trying to use her jetpack to get back to her space station, but she is being pulled away by a nearby planet, as shown in the image below. her jetpack provides a constant thrust of 310 n. if she angles her jetpack in such a way that it cancels out the vertical force due to the planet's gravity, what is her net horizontal force? thaud 487 o a. 54.8 n toward the space station o b. 212.9 n toward the space station o c. 185.2 n toward the space station o d 956 n toward the space station

Five structural isomers have the formula c6h14. where needed, draw the structure and give the iupac name of all five isomers.

The solar system is made up of eight planets, numerous comets, asteroids and moons, and the sun. the force that holds all of these objects together is