Experiments are usually compared against a control group where there was no independent variable applied to the dependent variable.
plants and algae. These organisms are called primary consumers or herbivores. Some examples are rabbits, deer, tadpoles, and caterpillars. organisms are called secondary consumers.
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The form of oxygen that combines three oxygen atoms into each molecule is called<span>. Poll Everywhere.
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Given the age of the meteorite is 4.5 billion years old with 78 atoms of lead-206 the answer should be B. 156. The half-life of uranium-238 in order to decay into lead-206 is 4.46 billion years, which means that the original number of atoms is 156.
