Propane is the correct answer to your question
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:
If you have three fatty acids attached to a glycerol, it is called a Triglyceride.
They contain symbiotic bacteria called rhizobia within nodules in their root systems, producing nitrogen compounds that help the plant to grow and compete with other plants. When the plant dies, the fixed nitrogen is released, making it available to other plants; this helps to fertilize the soil.
Answer:
A
Explanation:
Reptiles arose about 310–320 million years ago during the Carboniferous period.
