What is one property of viruses that makes it difficult to cure viral infections

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

Ineed the definitions of all of these words nasap i will give 1o points to whoever awnsers

Which of the following typically characterizes a tropical rainforests