Problem: OPTIONS:
- muscular and lymph systems
- circulatory and digestive systems
- respiratory and lymph systems
- respiratory and circulatory systems
Q: Answer the following question given this paragraph: The respiratory and circulatory systems work together to provide cells with the oxygen they need for cellular respiration. Cells also need glucose for cellular respiration. Glucose is a simple sugar that comes from the food we eat. To get glucose from food, digestion must occur. This process is carried out by the digestive system. Q: Which systems work together to provide cells with the oxygen they need for cellular respiration? A:
Answer: respiratory and circulatory systems

Problem:OPTIONS:
- snail
- trees
- shark
- fish

Answer the following question given this paragraph: Fish were the first vertebrates to evolve. The earliest fish lived in the water, and modern fish are still aquatic. Q: What were the first vertebrates to evolve? A:
****
A: fish

Answer the following question given this paragraph: Still other pathogens are spread by vectors. A vector is an organism that carries pathogens from one person or animal to another. Most vectors are insects such as ticks or mosquitoes. They pick up pathogens when they bite an infected animal and then transmit the pathogens to the next animal they bite. Ticks spread the bacteria that cause Lyme disease. Mosquitoes spread the protozoa that cause malaria. Q: An organism that carries pathogens from one individual to another is called what? A:
OPTIONS:
- germ cell
- virus
- host
- vector
vector

Answer the following question given this paragraph: Varves form in lakes covered by ice. Varves are useful to scientists for understanding climate. Q: Varves form in lakes covered by what? A:
OPTIONS:
- coral reef
- bridges
- soot
- ice

Answer: ice

Question: Answer the following question given this paragraph: The process of producing mature sperm is called spermatogenesis . Sperm are produced in the seminiferous tubules of the testes and become mature in the epididymis . The entire process takes about 9 to 10 weeks. You can watch an animation of spermatogenesis at this link: http://wps. aw. com/bc_martini_eap_4/40/10469/2680298. cw/content/index. html . Q: The process of producing mature sperm is called what? A:
OPTIONS:
- spermatosis
- glycogenolysis
- ketoacidosis
- spermatogenesis
Answer: spermatogenesis

input: OPTIONS:
- carbon monoxide
- hydrogen
- oxygen
- carbon dioxide Now, answer this question: Answer the following question given this paragraph: Introduction Breathing is an involuntary event. How often a breath is taken and how much air is inhaled or exhaled are tightly regulated by the respiratory center in the brain. Humans, when they aren't exerting themselves, breathe approximately 15 times per minute on average. Canines, like the dog in Figure 39.1, have a respiratory rate of about 1530 breaths per minute. With every inhalation, air fills the lungs, and with every exhalation, air rushes back out. That air is doing more than just inflating and deflating the lungs in the chest cavity. The air contains oxygen that crosses the lung tissue, enters the bloodstream, and travels to organs and tissues. Oxygen (O2) enters the cells where it is used for metabolic reactions that produce ATP, a high-energy compound. At the same time, these reactions release carbon dioxide (CO2) as a by-product. CO2 is toxic and must be eliminated. Carbon dioxide exits the cells, enters the bloodstream, travels back to the lungs, and is expired out of the body during exhalation. Q: What gas is expired out of the body during exhalation? A:
A:
output:
carbon dioxide