A growing human population means more food is needed. Improvements in farming can help meet this demand. Which of the following
have helped provide more food? fertilizers, pesticides, and more efficient farming practices
more people following a vegetarian diet
an increase in the number of farmers willing to work long hours
an increase in the number of people moving away from the city to live on farms
The kidneys are able to perform their homeostatic functions reasonably well as long as at least 10% of the nephrons are functioning normally. If fewer nephrons are functioning, uremia , or toxic buildup of waste products in the blood, is possible.