No caffein,there is a factor that must not be changed when conducting an experiment,known as controlled variable
Well lets see here, The definition of population is a particular section, group, or type of people or animals living in an area or country. So it would be D.<span>
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Answer:
d
Explanation:
bacteria is a small rna and there are millions of them they are not big enough to have dna
<span>Letter A is the answer. Almost all plant cells have single large central vacuole. These large central vacuoles of the plant cells are filled with water and can take over 80% of its cell volume. This is surrounded by a single membrane called tonoplast. The role of the central vacuole is maintaining the plant cell's pressure.</span>