LITTLE ROCK — Trees that lose their leaves seasonally are classified as _.
Trees produce _ and reduce __ in the atmosphere.
What is the fourth planet from the sun?
What is the longest bone in the human body?
What is the collective term for all the petals of a flower?
The part of a chromosome that is the basic unit of heredity.
In 1881, Louis Pasteur injected sheep and cows with an _ vaccine.
Who invented a vaccine for smallpox?
Its upper three parts are termed cervical, thoracic and lumbar.
Answers 1. Deciduous 2. Oxygen, carbon dioxide 3. Mars 4. Femur (thigh bone) 5. Corolla 6. Gene 7. Anthrax 8. Edward Jenner 9. Human vertebral column (spine)
Food, Pages 37 on 05/30/2012