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altimeter - ✔✔an instrument that uses air pressure to record height, such as the height
of a plane
anemometer - ✔✔an instrument to measure wind speed
angiosperm - ✔✔a group of plants that produce seeds enclosed within an ovary, which
may mature into a fruit
annuals - ✔✔plants that die after one growing season
asexual reproduction - ✔✔reproduction involving only one parent
atmosphere - ✔✔the Earth's atmosphere is primarily nitrogen and oxygen. The
atmosphere extends from the surface to about 10 km; the stratosphere from 10 km to 50
km; the mesosphere from 50 km to 80 km; and there thermosphere is the atmosphere
beyond 80 km
aurora borealis (northern lights) - ✔✔light emission from the upper atmosphere that
appear in many shapes and colors
bacillus - ✔✔a rod-shaped bacteria
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, blood - ✔✔fluid that circulates throughout the body of an animal, distributing
nutrients, and usually oxygen
canopy - ✔✔a layer of tree branches and other vegetation elevated above the ground
Carbon Dioxide (CO2) - ✔✔an colorless, odorless gas that is important in the Earth's
atmospheric greenhouse effect. From CO2 is dry ice.
carcinogen - ✔✔a substance that can lead to cancer
carcinoma - ✔✔a malignant tumor, which forms in the skin and outside of internal
organs
carnivore - ✔✔an organism that eats meat, which includes animals, fungi, and plants
ceilometer - ✔✔an instrument that measure cloud height
cell - ✔✔a fundamental unit of all light. The cell consists of an outer plasma membrane,
the cytoplasm, and genetic material (DNA).
celsius - ✔✔a temperature scale which freezes at 0 degrees and boils at 100 degrees
chemotherapy - ✔✔a cancer treatment that includes chemicals toxic to malignant cells
chinook wind - ✔✔a warm, dry wind on the eastern side of the Rocky Mountains
chlorophyll - ✔✔the green substance that absorbs light during photosynthesis
chromosome - ✔✔a single DNA molecule, a tightly coiled strand of DNA, condensed
into a compact structure
clone - ✔✔an identical copy of an organism
cloud - ✔✔a visible group of water or ice particles in the atmosphere
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