Answer:
1. 20 different amino acids.
2. Genes
3. nucleotides
4. uracil
Explanation:
What’s the question!!!!!!!!!!!!!!
If you mean a specific system then the reproductive system...but i haven't the slightest idea as to anything else to do with your question...
Decomposers are like the housekeepers of an ecosystem. Without them, dead plants and animals would keep piling up with the nutrients the soil needs trapped inside. Decomposers clean up the dead material by processing it and returning the nutrients to the soil for producers.
Answer: directional selection, disruptive selection and stabilizing selection
Explanation:
Natural selection is when organisms adapt to the environment and pass down these adaptations to their offspring when they breed
