Answer:
Sugars
Explanation:
Phloem is a living tissue inside the plants, where it can flow in either direction. Inside the phloem, it will have a cell, which both ends have walls with perforations. So the sugars will travel through them in both directions.
Fossils usually provide paleontologists with information about each of the following except <span>Fossils usually provide paleontologists with information about each of the following except DNA</span>
1/2 of a radioactive substance will remain after 3 half lives.
The same ligand can bind to different receptors causing different responses (e.g.. acetylcholine). On the other hand, different ligands binding to different receptors can produce the same cellular response (e.g. glucagon, epinephrine).
