Biology, 03.10.2019 11:10 dgonzale1857
1. the nutrient availability of aquatic ecosystems is the?
amount of nitrogen, oxygen, and other elements dissolved in the water.
number of other organisms present in the water.
amount of rainfall the water receives.
number of different animal species living in the water.
2. freshwater ecosystems that often originate from underground sources in mountains or hills are?
estuaries.
rivers and streams.
lakes and ponds.
wetlands.
Answers: 2
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Which of the following is the best definition for the process of photosynthesis? a.) plants digest sugars to make energy. b.) plants use oxygen and glucose to make carbon dioxide. c.) plants use sunlight and carbon dioxide to make sugars. d.) plants use sunlight to make chlorophyll and chloroplasts.
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The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a. an ionic bond is formed between the oxygen and carbon atoms. b. four valence electrons are shared. c. two valence electrons are shared. d. valence electrons are shared between oxygen atoms.
Answers: 1
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Select the correct answer. what is the observable characteristic of a person called? o a. genotypephenotypeoc. alleleo d. gene
Answers: 2
1. the nutrient availability of aquatic ecosystems is the?
amount of nitrogen, oxygen, and ot...
amount of nitrogen, oxygen, and ot...
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