All matter is made of indivisible particles called atoms, which cannot be created or destroyed.
Compounds are combinations of atoms of
2 or more elements.
All chemical reactions involve the rearrangement of atoms.
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Answer:
1.Cells are smallest unit of life.
2.Cells are important to the structure and function of living beings.
3.All organisms are made up of multiple cells.
<span>The answer is B) cell wall. The cell wall is a structure important cell protection and shape. It is necessary for the survival of unicellular organisms, such as Archaea and bacteria. Plants, some fungi, and algae also have cell walls with major function in structural support and protection against environmental conditions and infection. However, animal cells do not have cell walls.</span>
<span>If a test tube has been used, and its contents is supposed to be disposed, carefully pour the contents to the lavatory with a confirmation of a professional (as it may damage the pipelines of the sink) and ensure that there are no splashes created that can contact the human skin. Wash the test tube thoroughly and let dry.</span>
