Which of the following circumstances could be a cause of a miscarriage? a. maternal hormone balance b. genetic normality c. maternal infection

Which element is used in photosynthesis found in atmosphere and fixed by bacteria?

If a set of instructions that determines all of the charactersitics of an organism is comparedto a book,and a chromosme is compared to chaper in the book,then what might be compared to a paragraph in the book?

Did you know that a single bee would have to go to over 2 million flowers to make a single pound of honey?