Answer the following question given this paragraph: Annelids are segmented worms such as earthworms and leeches. Annelids have a coelom, closed circulatory system, excretory system, and complete digestive system. They also have a brain. Earthworms are important deposit feeders that help form and enrich soil. Leeches are either predators or parasites. Parasitic leeches feed off the blood of vertebrate hosts. Q: Parasitic leeches feed off of what? Choices: - brain - tissue - tumor - blood A:
blood
(Question)
Answer the following question given this paragraph: Q: What produces microspores that develop into pollen grains containing male gametophytes? Choices: - stems - leaves - petals - stamens A:
(Answer)
stamens
Ques: Answer the following question given this paragraph: Supercritical Fluids If we place a sample of water in a sealed container at 25 C, remove the air, and let the vaporization-condensation equilibrium establish itself, we are left with a mixture of liquid water and water vapor at a pressure of 0.03 atm. A distinct boundary between the more dense liquid and the less dense gas is clearly observed. As we increase the temperature, the pressure of the water vapor increases, as described by the liquid-gas curve in the phase diagram for water (Figure 10.31), and a two-phase equilibrium of liquid and gaseous phases remains. At a temperature of 374 C, the vapor pressure has risen to 218 atm, and any further increase in temperature results in the disappearance of the boundary between liquid and vapor phases. All of the water in the container is now present in a single phase whose physical properties are intermediate between those of the gaseous and liquid states. This phase of matter is called a supercritical fluid, and the temperature and pressure above which this phase exists is the critical point (Figure 10.35). Above its critical temperature, a gas cannot be liquefied no matter how much pressure is applied. The pressure required to liquefy a gas at its critical temperature is called the critical pressure. The critical temperatures and critical pressures of some common substances are given in Table 10.3. Substance. Q: What phase exists when all the water in a container has physical properties intermediate between those of the gaseous and liquid states? Choices: - stationary fluid - hydrothermal fluid - impregnation fluid - supercritical fluid A:
Ans: supercritical fluid
(Q).
Answer the following question given this paragraph: The lymphatic system consists of organs, vessels, and lymph. Q: Organs, vessels, and lymph make up what system? Choices: - digestive - circulatory - nervous - lymphatic A:
(A).
lymphatic
Ques:Answer the following question given this paragraph: Q: Coronary arteries ans small in what? Choices: - density - height - length - diameter A:

Ans:diameter
Answer the following question given this paragraph: The Figure below shows the direction of the current that is generated by a moving magnet. If the magnet is moved back and forth repeatedly, the current keeps changing direction. In other words, alternating current (AC) is produced. Alternating current is electric current that keeps reversing direction. Q: What is the term for electric current that keeps reversing direction? Choices: - direct current - AC/DC - magnetic current - alternating current A:
alternating current