Thunder is caused by the extremely rapid expansion of air around a bolt of lightning due to the very high temperature. It is also caused by the change of pressure around a lightning bolt.
Hope that helped you.
1.) B.) plants have chloroplasts
2.) B.) to prevent hydrophilic heads from sticking
3.) B , D and maybe C?
Answer:
definitely:
o To attract a peahen
o To intimidate rivals
Maybe:
o To Cool off
o To protect his peachicks
For sure incorrect:
o To show that he is healthy
o To run from a predator
Positive feedback is a control system that sends a signal to ( increase) a response.
