Cystic fibrosis is an inherited genetic disorder caused by two copies of a defective recessive gene that causes a) senility at around age fifty and slow nervous system damage. b) the buildup of fluid in the lungs, and complications from pneumonia. c) a form of mental impairment, along with heart defects, and a webbed neck. d) the inability of the blood to clot properly, resulting in organ damage and easy bruising.

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

Which is the correct order in the scientific process? ask a question ® form a hypothesis ® make an observation ask a question ® make an observation ® form a hypothesis make an observation ® form a hypothesis ® ask a question make an observation ® ask a question ® form a hypothesis

What is a dendrite and what does it do?