Answer:
Elements in the same group have similar properties because they have the same number of valence electrons.
Explanation:
What are valence electrons?
Valence electrons are the electrons on the outermost shell. For example take the element carbon or it’s symbol C. It’s has 4 valence electrons.
How do you find valence electrons?
Several ways, but one way is to draw Lewis structures, also known as Lewis dot diagrams.
Hope this covered the basics of your question :) Though there are more thorough answers for this question.
Answer:
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The answer is A proteins through chemical digestion
Your body constantly produces new cells. Normal cells follow a typical cycle: They grow, divide and die. Cancer cells, on the other hand, don't follow this cycle. Instead of dying, they multiply and continue to reproduce other abnormal cells. So, as a tumour gets bigger, cancer cells can spread to surrounding tissues and structures by pushing on normal tissue beside the tumour. Cancer cells also make enzymes that break down normal cells and tissues as they grow. Cancer that grows into nearby tissue is called local invasion or invasive cancer.
