The author develops the theme by how the main character is both excited and afraid by the new experience.?

choices are: describe, description, describing, descriptive

description

Step-by-step explanation:

i think-

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is:

try soting them out first

step-by-step explanation: