Problem: OPTIONS:
- prokaryotes
- monomers
- microorganisms
- eukaryotes
Q: Answer the following question given this paragraph: Protozoa are single-celled eukaryotes that share some traits with animals. Q: Single-celled eukaryotes that share some traits with animals are also called? A:
Answer: eukaryotes

Problem:OPTIONS:
- autonomic system
- endocrine system
- peripheral nervous system
- centralized nervous system

Answer the following question given this paragraph: Echinoderms lack respiratory and excretory systems. Instead, the thin walls of their tube feet allow oxygen to diffuse in and wastes to diffuse out. Echinoderms also lack a centralized nervous system. They have an open circulatory system and lack a heart. On the other hand, echinoderms have a well-developed coelom and a complete digestive system. Echinoderms use pheromones to communicate with each other. They detect the chemicals with sensory cells on their body surface. Some echinoderms also have simple eyes ( ocelli ) that can sense light. Like annelids, echinoderms have the ability to regenerate a missing body part. Q: Echinoderms lack what type of system that in humans consists of the brain and spinal cord? A:
****
A: centralized nervous system

Answer the following question given this paragraph: Q: What organs absorb water and nutrients from the soil? A:
OPTIONS:
- flowers
- buds
- leaves
- roots
roots

Answer the following question given this paragraph: Some reactions need extra help to occur quickly. They need another substance, called a catalyst. A catalyst is a substance that increases the rate of a chemical reaction but is not changed or used up in the reaction. The catalyst can go on to catalyze many more reactions. Q: What is the term for a substance that increases the rate of a chemical reaction but is not changed or used up in the reaction? A:
OPTIONS:
- a mechanism
- an acid
- a contribute
- a catalyst

Answer: a catalyst

Question: Answer the following question given this paragraph: Tracheal Systems Insect respiration is independent of its circulatory system; therefore, the blood does not play a direct role in oxygen transport. Insects have a highly specialized type of respiratory system called the tracheal system, which consists of a network of small tubes that carries oxygen to the entire body. The tracheal system is the most direct and efficient respiratory system in active animals. The tubes in the tracheal system are made of a polymeric material called chitin. Insect bodies have openings, called spiracles, along the thorax and abdomen. These openings connect to the tubular network, allowing oxygen to pass into the body (Figure 39.6) and regulating the diffusion of CO2 and water vapor. Air enters and leaves the tracheal system through the spiracles. Some insects can ventilate the tracheal system with body movements. Q: Insects have a highly specialized type of respiratory system called what? A:
OPTIONS:
- nasal system
- gland system
- grunion system
- tracheal system
Answer: tracheal system

input: OPTIONS:
- lightning
- atmosphere
- wind
- precipitation Now, answer this question: Answer the following question given this paragraph: Precipitation is water that falls from clouds. It may fall as liquid or frozen water. Types of frozen precipitation include snow, sleet, freezing rain, and hail. Q: What is the term for water that falls from clouds? A:
A:
output:
precipitation