Tibet is located in a mountain biome and is sometimes called the "Roof of the World." The people in Tibet are adapted to the mountain biome because they have larger lung capacities and increased
breathing rates compared with people not living in mountain biomes. Which feature of the mountain
biome would most likely cause this adaptation?
A extreme temperature change in a short amount of time.
B thin atmosphere with low oxygen and carbon dioxide levels
C exposure to harmful ultraviolet rays which require movement to find shelter
D sandy and rocky soils which require a lot of physical activity to navigate the terrain

Every compound can be represented by a chemical formula. a chemical formula is the set of symbols showing the elements that make up a compound and their proportions. water’s chemical formula is h 2 2 o. that means a molecule of water contains two atoms of hydrogen and one atom of oxygen chemically bonded. a molecule is a group of two or more atoms bonded together. molecules can range in size from two to thousands of atoms. a molecule of a compound is the smallest unit of that compound. every molecule of water has all the physical and chemical properties of water. that’s because every molecule of water is made of the same elements in the same proportions: two hydrogen atoms and one oxygen! which of the following is a true statement? a every molecule of the same compound will have different properties. b every molecule of a compound has the same proportion of elements. c molecules can be physically separated into smaller units of a compound. d molecules cannot be represented by chemical formulae.

The table lists the observations students made about four specimens under a microscope. based on these observations, what specimens did the students examine? animal plant virus prokaryote cell membrane present ribosomes present lysosomes present nuclear membrane present cell wall present ribosomes present nuclear membrane absent cell wall present ribosomes present nucleus present large vacuole present reproduces inside of a cell nucleus absent rna present 2019 edmentum all rights reserved intl

Stephen is a student who wants to test his knowledge of medical terminology. which option could he use?