What is the rest of the question
Answer:
It helps prevent invasive species from coming in.
Explanation:
Invasive species ruin habitats because they have no natural predators, so they grow and mooch off of native species which kills them off.
Adenine and guanine
Thymine and cytosine
Is a proposition that has not been empirically proven yet, and that attempts to describe or justify a system or phenomenon.
Answer: the two families of nucleic acids, rna and dna make the sequence of nucleotides in the dna or rna codes to make proteins in the cell
Explanation: