B. The oldest crust is closest to the mid-ocean ridge.
The correct answer is food chain.
The food chain can be defined as the transfer of energy from the producers and ends on consumers.
The producers make food by the help of photosynthesis using sunlight.
Example: Green plants and blue-green algae.
Then comes the consumers that eat the producers to obtain energy. The animals that feed on producers are called as primary consumers. Example: rabbit.
The animals that feed on primary consumers are called as secondary consumers.
Example: lion.
1. mRNA attaches to the ribosome.
2. tRNA's attach to free amino acids in the cytoplasmic "pool" of amino acids.
3. tRNA carries its specific amino acid to the ribosome.
4. tRNA "delivers" its amino acid based on complementary pairing of a triplet code (anticodon) with the triplet code (codon) of the mRNA.
5. Enzyme "hooks" the amino acid to the last one in the chain forming a peptide bond.
6. Protein chain continues to grow as each tRNA brings in its amino acid and adds it to the chain.
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Terminal buds develop at the top of a stem, lateral buds develop on the sides