You are presented with the question "What can infect bacteria?" and the following answer choices: - heat or cold - bioaerosols - burning coal - white vinegar - harm them - vinegar - influenza - fungi Now knowing that viruses often infect bacteria and influenza viruses are restless, choose the best answer.
influenza
(Question)
You are presented with the question "vertebrates have a complete digestive system and a closed what?" and the following answer choices: - digestive tract - lung system - the body's largest organ - circulatory system - Veins and arteries. - brain stem - all liquids - major threat to health Now knowing that chordates have a complete digestive system and a closed circulatory system and because reptiles are vertebrates, they are chordates, choose the best answer.
(Answer)
circulatory system
Ques: You are presented with the question "What are used for two people for communication with sound?" and the following answer choices: - cell phones - messengers - energy - megaphones - A Greek letter - flashlights - gramophones - electricity Now knowing that telephones are used for communication by two people by transmitting sound and cell phones are, bottom line, radios with a connection to a telephone company, choose the best answer.
Ans: cell phones
(Q).
You are presented with the question "Where does intense activity occur in a plant?" and the following answer choices: - Roots - Buds - bamboo - fields - Summer - years - Hairs - Petals Now knowing that roots have primary and secondary meristems for growth in length and width and meristems are zones of intense activity, choose the best answer.
(A).
Roots
Ques:You are presented with the question "what can most people only survive a few days without?" and the following answer choices: - NaCl - television - H20 - food - rain - urea - running - h2o Now knowing that most people can survive only a few days without water and water is made up of H2O molecules, choose the best answer.

Ans:h2o
You are presented with the question "What requires a lot of electricity?" and the following answer choices: - riding a bicycle - An emergency lighting source. - repair cells in the human body - sleeping on the floor - visiting a dam - Something that take eight minutes to travel to the Earth - Heating a metal filament. - keeping food fresh for long periods of time Now knowing that arefrigerator is used for keeping food fresh for a long period of time and refrigerators are major users of electricity, choose the best answer.
keeping food fresh for long periods of time