Problem: OPTIONS:
- stimulus
- Response
- Cortex
- true brain
Q: Answer the following question given this paragraph: Nervous systems throughout the animal kingdom vary in structure and complexity, as illustrated by the variety of animals shown in Figure 35.2. Some organisms, like sea sponges, lack a true nervous system. Others, like jellyfish, lack a true brain and instead have a system of separate but connected nerve cells (neurons) called a "nerve net. " Echinoderms such as sea stars have nerve cells that are bundled into fibers called nerves. Flatworms of the phylum Platyhelminthes have both a central nervous system (CNS), made up of a small "brain" and two nerve cords, and a peripheral nervous system (PNS) containing a system of nerves that extend throughout the body. The insect nervous system is more complex but also fairly decentralized. It contains a brain, ventral nerve cord, and ganglia (clusters of connected neurons). These ganglia can control movements and behaviors without input from the brain. Octopi may have the most complicated of invertebrate nervous systemsthey have neurons that are organized in specialized lobes and eyes that are structurally similar to vertebrate species. Q: What do jellyfish lack in their nervous system? A:
Answer: true brain

Problem:OPTIONS:
- deformation
- decomposition
- dissolution
- dissociation

Answer the following question given this paragraph: An ionic crystal lattice breaks apart when it is dissolved in water. Dissociation is the separation of ions that occurs when a solid ionic compound dissolves. It is important to be able to write dissociation equations. Simply undo the crisscross method that you learned when writing chemical formulas of ionic compounds. The subscripts for the ions in the chemical formulas become the coefficients of the respective ions on the product side of the equation. Shown below are dissociation equations for NaCl, Ca(NO 3 ) 2 , and (NH 4 ) 3 PO 4 . Q: What do you call the separation of ions that occurs when a solid ionic compound dissolves? A:
****
A: dissociation

Answer the following question given this paragraph: In the single fixed pulley, only one rope segment pulls up on the load, so the ideal mechanical advantage is 1. In other words, this type of pulley doesn't increase the force that is applied to it. However, it does change the direction of the force. This allows you to use your weight to pull on one end of the rope and more easily raise the load attached to the other end. Q: What is the ideal mechanical advantage in the single fixed pulley? A:
OPTIONS:
- zero
- 2
- 4
- 1
1

Answer the following question given this paragraph: The Hubble space telescope shows that technology and science are closely related. Technology uses science to solve problems, and science uses technology to make new discoveries. However, technology and science have different goals. The goal of science is to answer questions and increase knowledge. The goal of technology is to find solutions to practical problems. Although they have different goals, science and technology work hand in hand, and each helps the other advance. Scientific knowledge is used to create new technologies such as the space telescope. New technologies often allow scientists to explore nature in new ways. Q: What is the goal of science? A:
OPTIONS:
- improve knowledge
- improve life expectancy
- gain scholarships
- increase knowledge

Answer: increase knowledge

Question: Answer the following question given this paragraph: Q: Thousands of receptor cells that detect the sex attractant equip each filament of what structure? A:
OPTIONS:
- optic nerve
- flagella
- molecule
- antenna
Answer: antenna

input: OPTIONS:
- producer species
- original species
- colonization species
- pioneer species Now, answer this question: Answer the following question given this paragraph: The first few species to colonize a disturbed area are called pioneer species. In primary succession, pioneer species must be organisms that can live on bare rock. They usually include bacteria and lichens (see Figure below ). Along with wind and water, the pioneer species help weather the rock and form soil. Once soil begins to form, plants can move in. The first plants are usually grasses and other small plants that can grow in thin, poor soil. As more plants grow and die, organic matter is added to the soil. This improves the soil and helps it hold water. The improved soil allows shrubs and trees to move into the area. Q: The first few species to colonize a disturbed area are called what? A:
A:
output:
pioneer species