Answer:
Invasive species are among the leading threats to native wildlife. Approximately 42 percent of threatened or endangered species are at risk due to invasive species. These species were brout from other countries and they cause problems in these other countries or continents. Like the bees in america were not native and neither werer the cattle in the western hemisphere.
Explanation:
Covalent bonds is important in four macromolecules such as proteins (polymers of amino
acids), nucleic acids (polymers of nucleotides), carbohydrates (polymers of
sugars) and lipids (with a variety of modular constituents) because they served
as a basic structure of macromolecules.
In addition, the resulting covalent bond is a result
of sharing a pair of electrons, one from each atom or molecular units.
A citric acid cycle is less active when a cell has a high atp/adp ratio and high nadh/nad ratio.
<h3>What is cell and cell theory?</h3>
A cell is the structural and functional unit of life and it the the base of an living organism.
Cell theroy is a scientific theroy that's help to learn how living organisms are made up of cells, that's they are the basic structure unit of all organisms, and that all cells from pre-existing cells.
Prokaryotic cells are single-celled microorganisms known to be earliest on earth.Eukaroyatic cells have a nucleus enclosed within the nuclear membrane and form large and complex organism.
The main difference between unicellular organisms and multicellular organisms is that unicellular organism is unspecialized it means all the body function depends upon only on the single cell and in multicellular organism there is specific cells for specific purposes.
Therefore,a citric acid cycle is less active when a cell has a high atp/adp ratio and high nadh/nad ratio.
Learn more about cell here:
brainly.com/question/3142913
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O) Organic Matter
A) Surface soil
B) Subsoil
C) Parent Rock
R)Bed rock
