This is the exact answer:
Bacteria are helpful because they produce oxygen, which our bodies need to breathe, and they help us to digest the food we eat. Bacteria are also helpful because they are used in medicine to help us overcome disease. Bacteria are harmful because they can cause tooth decay and illnesses that can be either common or quite serious.
I dont know any of this please help me this iis super hard
Answer:
C
Explanation:
The circulatory system would fail, and the entire organism would suffer.
------i took the test and at first i chose what the person above me said which was A, but i got it wrong. when i looked at the "review" to see which ones i got wrong, it showed that the correct answer is C.
A) Crossing over is the mechanism of genetic variation that results from the exchange of gene segments between non-sister chomatids.
XD I was in it!!!!!!!!!!!!!!
C) due to the fact that everyone needs to know. Not everyone listens to publications by scientist unless it's on the news aka public broadcast media.
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