All living organisms are made of only 20 different aminoacids- this is the correct answer! This means that the genetic code only codes for those 20 aminoacids (for example Glutamine and Lysine).
The 20 aminoacids that can form proteins are also called Proteinogenic amino acids.
Cell, and gas are for sure made up of atoms so it’s either heat or a solid
After the solar cycle takes place, bigger sun spots appear, flares appear, and the solar radiation changes.
If this doesn't answer your question, I'll try again. If there are options feel free to comment them as it can narrow down my choices.
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Answer:
The answer is ectoderm. The mesoderm is the middle layer of lining. The endoderm is the innermost layer. You can remember it by:
Endo/ sounds like inner
Meso/ M for middle
Ecto/ sounds like exo, bugs have exoskeletons that are on the outside.
Explanation: