You have to put a lid on petri dishes in order to ensure that no outside contaminants get inside the dish.
<span>An accepted hypothesis can be rejected later on because of an experiment to test the hypothesis. Which causes the hypothesis to change and have a new prediction. During a scientific experiment the predicted outcome may change which is okay, but the hypothesis must change too.</span>
The form of natural selection is called adaptive radiation
Answer:
yes
Explanation:
There are many bacteria and viruses that are harmful and can cause diseases but there are some bacteria that are helpful
Hope it helps! Mark it as brainiest please