Steven grows corn in his garden every year. He always uses the same methods, and never adds to or changes the soil in any way. He notices that every year, his corn crop is smaller and smaller, even though the weather hasn’t been any different. What is the explanation for what is happening to Steven’s corn? A. The soil is running out of nutrients.

B. The corn needs more space to grow.

C. The soil isn’t as deep as the year before.

D. Steven is using the wrong type of seeds.

Glass is transparent to visibile light under normal conditions; however, at extremely high intensities, glass will absorb most of the light incident upon it. this works through a process known as multiphoton absorption. in this process, several photons are absorbed at the same time. if very intense light whose photons carry 2ev of energy is shined onto a material with a band gap of 4ev, that light can be absorbed through two-photon absorption, because two photons have the right amount of energy to bridge the band gap. what is the minimum number of photons of 800-nm light that are needed to equal or exceed the band gap of fused silica glass

Infrared radiation has wavelengths that are shorter than visible light is part of the visible light spectrum has wavelengths that are longer than visible light has the same wavelengths as ultraviolet radiation

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell