Answer: A
Explanation: Natural Gas Is Considered A Renewable Energy Source, Which Means It Is Safer For The Environment. The Other Answer Choices Are For Nonrenewable Energy Sources Like Fossil Fuel.
Answer: Because they have built up immunity from past medications.
Explanation: As people get sick and are given antibiotics the 99.9 % are removed but that one percent from the bacteria is able to overcome the antibiotics and make itself stronger and immune to the medicines, then the bacteria evolves and a new person will get infected and will need stronger antibiotics further more the cycle is repeated.
first one is definitely a fact
Jump to A Protein Molecule Can Have an Elongated, Fibrous Shape - A protein consists of a polypeptide backbone with attached side chains. Each type of protein differs in its sequence and number of amino acids; therefore, it is the sequence of the chemically different side chains
Answer:
multicellular animal,plant,fungi,microorganisms