Which statement best describes how matter moves within and between ecosystems? a. matter flows in a one-way direction through food chains and food webs. b. matter cycles between trophic levels in food chains and food webs. c. matter is made and destroyed as it is used by living things. d. matter cycles through food webs and biogeochemical cycles.
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Biology, 22.06.2019 06:10
You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13
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Biology, 22.06.2019 10:50
The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million
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Biology, 22.06.2019 14:30
Alexa is preparing for a presentation by creating note cards identifying keywords that describe various features of each type of plate boundary. which words apply to all three of the convergent boundaries?
Answers: 2
Which statement best describes how matter moves within and between ecosystems? a. matter flows in a...
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