Advantage: Dichotomous keys are very useful because they allow non-expert users to identify organisms by directing them to look at the known, important organisms. Disadvantage: Disadvantage of dichotomous keys is that if a single wrong decision is made at any juncture, a wrong identification will result. Sometimes it becomes obvious that an error has been made, and you can retrace your steps until you get back on the right track, but this is not always the case
B and D. The xylem and the phloem make up the vascular tissue of plants and transport water, sugar, and other important substances around a plant.
The cells that die are emptied, leaving hollow cell walls with their ends open, thus forming pipe-like structures
Hope this helps
Answer:
B. a sequence of DNA bases that duplicates a sequence of RNA bases.
Explanation:
Transcription is the first step in gene expression. It involves copying a gene's DNA sequence to make an RNA molecule.
Answer is D.
you can learn A,B, and C from examining fossils
<span>1.) What is the most important source of energy that our body craves more than any other?
Glucose is a type of sugar you would find in healthy fruits and vegetables. The body needs this to be active and full of energy. It starts as glucose, then gets turned into ATP.
2.) What are the organelles in each cell that burn this energy?
Mitochondria, and cytoplasm.</span>
