Choose one chemical that humans add to residential water that is not present in lake (or the source) water. Explain its purpose.  (2 marks)

Choose one chemical that humans add to residential water that is not present in lake (or the source) water. Explain its purpose.  (2 marks)

Choose one chemical that humans add to residential water that is not present in lake (or the source) water. Explain its purpose.  (2 marks)

The #9 arrow is pointing to the end of which blood vessel (red)? (Hint: this blood vessel runs underneath the pulmonary trunk) Heart 9 & 10.JPG

The #22 arrow is pointing to which part of the heart? Heart 22.JPG

The arrows are pointing to which muscle in the chamber? Heart 18b.png

The #9 arrow is pointing to the end of which blood vessel (red)? (Hint: this blood vessel runs underneath the pulmonary trunk) Heart 9 & 10.JPG

Students cannot take course quizzes late unless they provide documentation of an emergency.

BMW was the first car company to install the 3-point harness seat belt.

Students cannot take course quizzes late unless they provide documentation of an emergency.