Nitrogen-fixing bacteria convert atmospheric nitrogen into forms of nitrogen that living things can use, Please select the best answer from the choices provided
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The population of bacteria in a petri dish doubles every 40 seconds. the population of the bacteria is initially 400 organisms. what unit is most appropriate for the time at which the number of bacteria is 300? hour bacteria per hour second bacteria per second

One of the reasons that stars are so large is because

What is required in the genotype of an individual to show a recessive trait? a.two recessive alleles b.at least one recessive allele c.no recessive alleles