Student Resources—746

Leeuwenhoek microscope, 222
Lemur, 338, 350, 351
Lenses, of eye, 453, 453
Leukemia, 370
Lever(s), in human body, 440, 441
Levy, Julia, 238
Life span, 215; human, 487
Ligaments, 444, 446
Light, energy of, 719, 719; and
environment, 533, 533;
ultraviolet, 96, 98 lab
Lightning, 130, 130, 130 act
Lime, 637
Limestone, 70, 74, 75; fossils in, 344
Limiting factors, 541, 541,
550–551 lab
Linnaeus, Carolus, 218, 505
Lipids, 250, 406. See also Fat(s)
Liquid(s), 654, 654–655, 655. See
also Fluids; freezing, 651 lab, 660,
661; and surface tension, 655,
655; vaporization of, 660, 662,
662–663, 662 lab; viscosity of, 655
Liquid-gas solutions, 624, 624
Liquid-liquid solutions, 624
Lister, Joseph, 385
Liver, 403
Liverworts, 506, 507
Living things, classification of,
213 lab, 218, 218; defining, 214;
energy use in, 216; food sources
of, 217; growth and development
of, 215, 215; homeostasis in, 216,
216 act; interactions among,
539–543; levels of organization
of, 535, 535–537; needs of, 217;
organization of, 214, 214, 224,
224, 230; reproduction of, 216,
216; responses of, 216
Lodestone, 40, 40, 597, 597
Low pressure area, 127, 135, 136
“Lucy” (fossil), 351, 351
Lunar eclipse, 179, 179, 180, 180
Lung(s), 414, 415, 415; pulmonary
circulation in, 373, 373
Lung cancer, 417, 418, 418
Lungfish, 155, 155
Luster, 38, 38
Lye, 637
Lymph, 377
Lymphatic system, 376–377, 377
Lymphocytes, 377, 379–380
Lysosomes, 229
Machine(s), simple, 440, 441
Maculae, 455, 455
Magma, 33, 33, 59, 62, 62–63,
63, 64
Magnesium hydroxide, 640
Magnetic properties, 40, 40, 597, 597
Magnetite, 38 act, 40, 40, 45
Male reproductive system, 470,
474, 474
Mammals, egg-laying, 490
Mantle, of Moon, 185, 185
Map(s), weather, 136, 136, 137 lab
Marble, 70, 70
Marble launch, analyzing, 715 lab
Maria, 184
Marrow, 445
Mars, 196, 196
Mass, conservation of, 609, 609; and
inertia, 692, 692; and kinetic
energy, 717, 717; and weight, 696
Materials, alloys, 625, 625
Matter, 652. See also States of matter;
appearance of, 595, 595; atoms,
246, 246, 248, 248; compounds,
248, 248, 250–251; cycles of,
548–549, 548 lab, 549; describing,
594–599, 599 lab; elements, 247,
247, 248, 248; and energy,
544–549; inorganic compounds,
251; ions, 248–249, 249; mixtures,
249, 249; molecules, 248, 248, 253;
organic compounds, 250–251;
and rock cycle, 61; states of. See
States of matter
Measles, 234, 380
Measurement, of acid rain, 569 lab;
of concentration, 631–632, 632;
of force, 666; of motion, 687,
687; of properties, 596 lab; of
rain amounts, 135 lab; of skin
surface, 438 lab; of space, 531 lab;
of strength of acids and bases,
638, 638–640, 639, 642–643 lab;
units of, 194, 691; of weight, 596;
of wind speed, 119, 138–139 lab
Mechanical digestion, 400, 402,
424–425 lab
Mechanical energy, 443, 443
Medicine, insulin, 50; plants as, 508
act, 522–523 lab
Index
Leeuwenhoek microscope Mineral(s)
M
Meiosis, 285, 285–289, 286–287, 288
Melanin, 435, 435
Melting, 601, 601, 659, 659, 660
Melting point, 596, 597, 659
Memory B cells, 380
Mendel, Gregor, 307–310, 309, 312,
314, 315
Menopause, 477, 477
Menstrual cycle, 476, 476–477
Menstruation, 476, 476–477
Mercury, 195, 195
Mesosphere, 92, 92, 93, 95, 95
Messenger RNA (mRNA), 293
Metabolism, 261, 261
Metal(s), as nonrenewable
resource, 561, 561; recycling, 580
Metal alloys, 625, 625
Metamorphic rocks, 59, 59, 60,
67–70; classifying, 69, 69–70, 70;
formation of, 67, 67–68, 68
Metaphase, 278, 279, 286, 286,
287, 289
Meteor, 200
Meteorite, 161, 200
Meteoroid, 200, 605
Meteorologist, 134
Methane, 163, 199, 199
Mica, 39, 58, 58, 69
Mice, 220, 543, 543
Microclimates, 168–169 lab
Microorganisms, beneficial, 264
act; and infectious diseases, 371
lab; in mouth, 386
Microscopes, 221, 222–223,
236–237 lab; and discovering
disease organisms, 382
Mineral(s), 28–49, 30; appearance
of, 36, 36; characteristics of, 30;
cleavage of, 39, 39; color of, 38;
dietary, 405, 408; distinguishing
rocks from, 29 lab; in Earth’s
crust, 34, 34; effects of mining,
562 lab; fracture of, 39; gems, 41,
41–44, 42, 43, 44, 44 act; hardness
of, 37; identifying, 36, 36–40, 38
act, 40, 48–49 lab; luster of, 38,
38; magnetic properties of, 40,
40; as nonrenewable resource,
561; physical properties of, 36,
36–40, 38, 39, 40, 48–49 lab;
rock-forming, 34; streak test of,
39, 39; structure of, 31, 31–33, 32,
33, 35 lab; unique properties of,
INDEX 835
Index