Answer the following question given this paragraph: Sand is blown up a slope. Gravity pulls it down the other side. This is how dunes migrate. Q: Sand dunes migrate when sand is blown up a slope and this force pulls it down the other side? Choices: - earthquakes - air pressure - spin - gravity A:
gravity
(Question)
Answer the following question given this paragraph: Greenhouse gases include CO 2 , H 2 O, methane, O 3 , nitrous oxides (NO and NO 2 ), and chlorofluorocarbons (CFCs). All are a normal part of the atmosphere except CFCs. The table below shows how each greenhouse gas naturally enters the atmosphere ( Table below ). Q: Co 2 , h 2 o, methane, o 3 , nitrous oxides (no and no 2 ), and chlorofluorocarbons (cfcs) are known as what type of gases? Choices: - chemical gases - hydrogen gases - carbonate gases - greenhouse gases A:
(Answer)
greenhouse gases
Ques: Answer the following question given this paragraph: Group 15 is called the nitrogen group. The metalloids in this group are arsenic and antimony. Group 15 also contains two nonmetals and one metal. Q: Which metalloids are found in the nitrogen group? Choices: - polonium and antimony - selenium and antimony - sulfur and polonium - arsenic and antimony A:
Ans: arsenic and antimony
(Q).
Answer the following question given this paragraph: Longitudinal waves, like sound waves, have compression and rarefaction zones. The compression zones are where, for example in a sound wave traveling through air, the air molecules are densely packed. The rarefaction zones are areas where the air molecules are loosely packed, like a vacuum zone. Us teachers will often draw longitudinal waves as transverse waves, but remember the difference. Q: What is the opposite of rarefaction zones, where air molecules in waves are loosely packed? Choices: - molecules zones - pressure wave - measurements zones - compression zones A:
(A).
compression zones
Ques:Answer the following question given this paragraph: Organisms that live in a hypotonic environment such as freshwater, need a way to prevent their cells from taking in too much water by osmosis. A contractile vacuole is a type of vacuole that removes excess water from a cell. Freshwater protists, such as the paramecia shown in Figure below , have a contractile vacuole. The vacuole is surrounded by several canals, which absorb water by osmosis from the cytoplasm. After the canals fill with water, the water is pumped into the vacuole. When the vacuole is full, it pushes the water out of the cell through a pore. Other protists, such as members of the genus Amoeba , have contractile vacuoles that move to the surface of the cell when full and release the water into the environment. Q: Organisms that live in freshwater environments often possess a contractile vacuole that prevents cells from taking in too much water through what process? Choices: - electrolysis - glycolysis - hemostasis - osmosis A:

Ans:osmosis
Answer the following question given this paragraph: Intrinsic Muscles of the Hand The intrinsic muscles of the hand both originate and insert within it (Figure 11.28). These muscles allow your fingers to also make precise movements for actions, such as typing or writing. These muscles are divided into three groups. The thenar muscles are on the radial aspect of the palm. The hypothenar muscles are on the medial aspect of the palm, and the intermediate muscles are midpalmar. The thenar muscles include the abductor pollicis brevis, opponens pollicis, flexor pollicis brevis, and the adductor pollicis. These muscles form the thenar eminence, the rounded contour of the base of the thumb, and all act on the thumb. The movements of the thumb play an integral role in most precise movements of the hand. The hypothenar muscles include the abductor digiti minimi, flexor digiti minimi brevis, and the opponens digiti minimi. These muscles form the hypothenar eminence, the rounded contour of the little finger, and as such, they all act on the little finger. Finally, the intermediate muscles act on all the fingers and include the lumbrical, the palmar interossei, and the dorsal interossei. Q: Which muscles allow your fingers to also make precise movements for actions? Choices: - paired muscles - motoric muscles - fine movement muscles - intrinsic muscles A:
intrinsic muscles