Which form of nitrogen can immediately be used by plants

Under maritime law, cruise ships are not allowed to discharge their garbage at sea. T or F

There have been books written about how blood type affects personality or body shape. Knowing that blood type is determined by antigens on erythrocytes, are these claims scientifically valid? O True O False

Marble A has a mass of 0.25 kg and moves 1.0 m/s to the right. It strikes the identical marble, B, which is at rest. Four students predict what will happen after the collision.

How did Thomson know atoms had an overall neutral charge? He knew there were negative electrons but he came to the conclusion that the rest of the atom was positively charged, why was this? How did he know it would be positively charged?

How does mass play a role in the life cycle of a star?

The driver of a car traveling at 32 m/s applies the brakes and undergoes a constant deceleration of 2.25 m/s^2.

You are going to develop some photographic film that involves a chemical reaction between the developer, which you will mix yourself, and a chemical on the surface of the film.

Would time travel mean that parallel universes would be created off our linear time sequence to ensure the universe doesn't collapse itself because of significant events being drastically changed in the way it shapes the universe?

What is the central core of hair

A star with the same mass of the sun has a newly discovered planet whose semi-major axis of 2.48 au and an eccentricity of 0.08. what is the aphelion distance of the new planet