The liver removes ammonia from the blood and converts it into urea. Why is this activity of the liver an example of homeostasis?
A. The activity is independent of blood levels of ammonia, and has no effect on the levels.
B. The activity keeps blood levels of ammonia within a certain low range that the body can tolerate.
O C. The activity occurs only during the day, when the body is most active.
D. The activity occurs only at night, when other body organs are at rest.

1. the passing of is the basis of heredity. 2. our encode the instructions that define our traits. 3. each of us has thousands of genes, which are made of and reside in our chromosomes. 4. in addition to our genes, the we live in also define our traits. 5. humans have two complete sets of chromosomes. 6. when parents conceive a child, each parent contributes set of chromosomes. 7. every child receives of its chromosomes from the mother and half from the father. 8. this transfer takes place at when the father’s sperm joins the mother’s egg. 9. while most cells in our bodies have two sets of chromosomes, or a total of egg and sperm each have chromosomes. 10. when egg and sperm unite they create a single cell called a 11. each parent contributes complete set of chromosomes to their child. 12. since the parents contribute the chromosomes to each new child, every child inherits a unique set of chromosomes. 13. as a result, every baby will have a combination of traits.

Paint and solvents pose no potential hazard to human health. select the best answer from the choices provided t f

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