Which term should replace the question mark?

As rain falls onto land, what can happen too it?

Researchers have developed cars which navigate and steer themselves. Aside from cost, what is most likely the main factor keeping these systems from being placed on all new cars?

What is the volume of a gas at 50.0 celsius and 0.80 atm, if there are 0.75 moles of the gas present?

What is reduced in the reaction Mn + HCl → MnCl2 + H2? 1. chlorine in HCl 2. This is not a redox reaction. 3. manganese 4. hydrogen in HCl

What three factors set convection currents in motion?

In DNA, what base pairs with cytosine? A. adenine B. cytosine C. guanine D. thymine

What do astronomers use to calculate the age of the universe? Check all that apply. dark energy the age of rocks on Earth the age of the oldest stars patterns of background radiation how fast distant galaxies are moving away from us

Determine the distance of closest approach (in fm) before the alpha particle reverses direction. Assume the lead nucleus remains stationary. Assume the alpha particles are initially very far from a stationary lead nucleus.

Why does the bottom of the boat appear to be longer than the top of the boat

Which best explains why greg's hands get warm as he holds a bowl of hot soup? heat energy is created from the thermal energy in greg's hands. heat energy is absorbed by the soup from greg's hands. thermal energy from the soup moves to greg's hands.