The substitution method for solving two-order systems involves solving one equation using the terms of the other equation. true false

b) the dogs need to shift their focus to human scent.

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:

i think the answer is b. i hope i !