D because to help preserve environment everyone has to work together
A)mitochondria and chloroplast:- converts energy,oxygen and carbon dioxide are involved in its processes.
B)mitocondria:- have fluids inside it
C)nucleus and ribosomes:- enclosed by two membranes
To find the speed of waves, use this formula!
V = frequency x wavelength
(V is a unit for speed)
Plug in your numbers!
V = 3.7 x 8.4
V = 31.08 m/s
*m/s is meters per second.
