3E3 SCIENCE BLOG

The skin on our body contains melanocyte cells produce melanin . The sun rays provide the energy for melanin production in our skin as they are living things . As for hair , the sun light break down the melanin and other cells in the hair . Hair is a non living fibrous protein .
Vegetable does contain oil it in , but it is just used to carry out the processes . Thus , vegetable oil gets it oil from vegetable .
The cockroach breath through spiracles which are in each body segment . Their blood doesn't carry oxygen to the tissue . The cockroach does not have blood pressure like other animal , thus cutting it head would not result to bleeding . Cockroach can breath through every spiracles in each body segment , thus drowing it , it still can be breathing for quite long .

JIAJUN .