During the growing season, a balanced fertilizer, which has been diluted to 1/4 strength, can be added to the water for each watering. (A balanced fertilizer is one that has roughly equal proportions of Nitrogen, Phosphorous, and Potassium. A 10-10-10 fertilizer diluted to 1/4 strength is ideal.)
Q: How many animals are used each year in U.S. laboratories for biomedical research?A: It is estimated that more than 25 million vertebrate animals (animals with a skeleton made of bone) are used annually in research, testing, and education in the United States.
The exact number of people who go to zoos each year is not classified. It is estimated that the average person goes to a zoo at least once a year. Most estimate that over 4. â¦ 5 billion people go to zoos each year. For more details, see the sites listed below. 13 people found this useful.