Which is a biological indicator of water quality?
B. diversity of insect larvae
A. temp...
Chemistry, 08.03.2021 20:50 chris018107
Which is a biological indicator of water quality?
B. diversity of insect larvae
A. temperature
C. dissolved oxygen
d. pH
Answers: 3
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What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.
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The atomic number, or number, is the described as the number of in the nucleus of an chemical element.
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Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.
Answers: 2
Chemistry, 22.06.2019 17:30
Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)
Answers: 2
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