View the illustration and answer the questions below. Which organism is the youngest?

a
The trilobite
b
The fern
c
The crinoid
d
The ammonite

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.

At the negative terminal of the battery the electron has electric potential energy. what happens to this energy as the electron jumps from the negative to the positive terminal?