Erosion-just took the quiz on apex
The appropriate answer is c. a scientific journal. A scientific journal is a collection of papers based on topics in science that have been written by experts in their fields. Individuals with a masters or doctorate in various subject areas are published here.
From the list given this is the best second source for the research. Science fiction novels and not real and so would be unacceptable. Magazines and news papers reporting on scientific research most likely get information from scientific journals.
Answer:
the amount of carbon-13 it contains
Explanation:
carbon dating has been used many historians, scientists and researchers in order to correctly estimate the amount of carbon it contains. This is because all substances contai carbon and the levels of carbon decrease/deteriorate over time
Xylem and Phloem. They are both part of the vascular tissue. Xylem is responsible for the movement of water and minerals from the roots to the leaves for photosynthesis. Phloem transports the sugar made during photosynthesis from the leaves to different parts of the plant. I'm pretty sure that water is included when the sugar is transported (in phloem) but you should just check if water is transported after photosynthesis just to make sure
Age causes the tree bark to darken
