The 3rd one I think not really sure
Answer:
its actually caused by bacteria called Clostridium tetani
Explanation:
my science teacher told me
Answer:
Scientists use certain letters to represent different types of genes, known as alleles, which come together to create the genotype
Answer:
c
Explanation:
Gas exchange. Gas exchange occurs as a result of respiration, when carbon dioxide is excreted and oxygen taken up, and photosynthesis, when oxygen is excreted and carbon dioxide is taken up. The rate of gas exchange is affected by: the area available for diffusion.