Answer:
There are a bunch of things.
Explanation:
Smoking and Tobacco.
Diet and Physical Activity.
Sun and Other Types of Radiation.
Viruses and Other Infections.
Hope this helps!
Answer:
An embryo is the early stage of human growth in which the vital body structures of organs are developed. In the 11th week of pregnancy, which is the 9th week of development after egg fertilization, an embryo is considered a fetus.
Explanation:
All stages respiration occur in every single cell.
Dna is a code sdasdasdasddsddsds
Answer:
The rocky, brittle lithosphere cracks. These cracks are called faults.
