Answer:
Living organisms must take in energy via food, nutrients, or sunlight in order to carry out cellular processes.
Explanation:
Answer:
An RNA single-stranded molecule that is complementary to one of a gene's DNA strands, to be precise.
Explanation:
DNA sequences or segments code for proteins or molecules with defined functions, called genes.
Answer: they allow air to enter lungs and also permits air into the body
Explanation:
