Mars was once similar to Earth in that

A. it had only one moon.

B. liquid water flowed on its surface.

C. it showed evidence of plate tectonics.

D. its atmosphere had a thin layer of carbon dioxide.

Which of the following is an example of the strong nuclear force acting in an atom? A. A neutron attracting a proton B. A proton attracting an electron C. An electron attracting another electron D. A neutron attracting an electron

Variations to the forehand stroke are not allowed. a. true b. false

Which will most likely bring clouds and precipitation that last for several days A. high-pressure area B. cold front C. stationary front D. warm front

What is any motion in which an object is moving along a curved path

A student is building a simple circuit with a battery, light bulb, and copper wires. When she connects the wires to the battery terminals, the light bulb does not light up. Which of the following could explain why the bulb does not light? A.

if a spring stores 5j of energy when it is compressed by0.5m, what is the spring constant of the spring?

In which of the following eons did a significant amount of oxygen gas exist in Earth's atmosphere? a| Hadean b| Archean c| Proterozoic d| No answer text provided.

Why do we see different faces of the moon? Why is it not always a full moon?

What is the resistance of a circuit with a voltage of 10 volts and a current of 5 amps?

What mass of water will fill a tank that is 100.0 cm long, 50.0 cm wide, and 30.0 cm high? Express the answer in grams.