Which of the following statements is true?
Xylem and phloem transport water, food, and minerals.
Trees cannot live if they are stripped of their bark.
Photosynthesis needs light energy to happen.
All of the above

Which potential solution below best addresses the issue of loss of biodiversity in a north american ecosystem?

Using freezing point depression to find molecular weight lab report

Dna has unique properties that allow it to accurately retain genetic information, even after multiple rounds of replication. one aspect of dna that allows it to accurately store genetic information is the base pairing from chargaff\'s first rule of the four nucleotide bases. if the c content of a dna molecule is 22%, what are the percentages of the remaining bases?