Answer:
a substance that has a ph level less than 7
Explanation:
You can learn their traits such as the color of the feathers and where they came from or originated from
Answer:
Muscle cramps are caused by the inability of myosin fibers to break free from the actin filaments during contraction, resulting in a prolonged contraction. A lack of ATP would obviously produce cramping, as myosin requires ATP to become free from actin.
Answer: A) Z
Explanation: I JUST TOOK THE TEST ON STUDY ISLAND
Bacteria can be transmitted by contact, ingestion, breathing in, and can also get inside open cuts in the skin. viruses ingested, air born which means you can breathe it in, you coming in contact with someone or something infected by the virus. you can also contract it from your environment in some cases.