Answer: because you think a letter was easiest way to represent the elements. Another way is to use the chemical symbols and it is to allow you to write chemical formulas easily.
Explanation:
Answer:
Maybe B, I need more evidence
Explanation:
Answer:
Why is aerogel blue? The sky, glaciers and aerogel all have tiny particles or bubbles that scatter light.
Explanation:
The leaf needs the sun to grow and gain energy. the insect then eats the leaf and gets its nutrition and energy.
hope this helps you
:)
