Why is hemophilia called a sex linked trait ?

Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c. ozone layer hole d. increase in sea levels

Explain why the plants cortex would serve as the best food source for animals

Which kingdom includes some organisms that have no nucleus and can live in an environment with an extremely high salt content