some blind cave salamanders have eyes. how might this be evidence that cave salamanders evolved from sighted ancestors'

How Large is The Milky Way Galaxy

The energy required to dissociate KF into neutral atoms is 498 kJ/mol. Given that the first ionization energy for K is 418 kJ/mol, calculate the electron affinity (in kJ/mol) for F. Show your work for all calculations.

A meteor moving through outer space continues to move on the same path until an outside force acts on it

As a sound wave moves from the source to the ear of a listener, particles of air vibrate back and forth in the same direction and the opposite direction of energy transport.

How many types of quarks are there? a. 2 b. 4 c. 6 d. 8

Suppose gene A on the left chromosome is damaged and no longer functions. what form of the trait would show? Why?

I'm completely lost in physics, the Kinematics and dynamics units ... My exam is coming up ... If a biker travelling at 6.4m/s sees biker B 34m ahead on the road travelling 4.7m/s. How far will biker B get before biker A catches him?

When scientists record the volume of a gas, why do they also record the temperature and the pressure

Why is velocity most important in space launch?

A person walks up a stalled escalator in 25 s. When standing on the same escalator, now moving, she is carried up in 16 s. How much time in seconds would it take her to walk up the moving escalator?