during a experiment, if i give a group of people a drink always 30 minutes before a basketball match, would it be a control variable? if not what would be an example of a control variable in the experiment?​

What is the first step in a life cycle of a plant reproduce sexually

Which of the following are the functions of the skeletal system? blood cell production in soft marrow tissues and mineral reserves largest organ of the body for defense and support vitamin d production and pumping blood through vessels voluntary movement and contractile movement

Which best explains why viruses do not have special structures or enzymes that allow them to make their own food? viruses can use energy in living cells that they infect. viruses can replicate inside a host that they infect. viruses can cause contagious illnesses in host cells. viruses integrate their rna or dna into infected cells.