There are 13 left handed and 21 right handed spirals on the cacti in the photograph. What is special about these numbers? A. They are consecutive terms in the pyramidal sequence. B. The value of the 21 st term of the Fibonacci sequence is 13. C. They are consecutive terms in the Fibonacci sequence. D. The value of the 13th term of the Fibonacci sequence is 21.

C. They are consecutive terms in the Fibonacci sequence

Step-by-step explanation:

Fibonacci sequence:

i need a picture

step-by-step explanation:

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: