Narrow.
For a wide ring, it indicates a longer/faster growing season. Narrower ring means there is less growth, which is likely caused by poor growing conditions.
Answer:
The correct answer is: Epithelial tissue, <u>because 1) it's in direct contact with the environment, and 2) their cells are rapidly dividing. The two factors contribute greatly to the appearance of cancer.</u>
Explanation:
Epithelial tissue is one of the four basic tissue types (along with connective tissue, muscle tissue, and nervous tissue), and it is characterized for being <u>avascular</u> (there are no blood vessels in it), being <u>very cellular</u> (it has many cells and not many fibers), <u>having polarity</u>, being capable of <u>regeneration,</u> and being <u>attached to a basal membrane</u>.
The main function of the epithelial tissue can vary from the location of it, since it gives each organ a function, but as a whole, we could say it is involved in <u>transport, secretion, protection, sensing, and absorption</u>.
While the epithelial tissue's characteristics (such as their rapid regeneration) are crucial for its highly important functions, this can also make them home to carcinomas and adenocarcinomas.
The sequential order here is genetic information >> natural selection >> evolution. This order allowed the emergence of new adaptations (e.g., the gecko's coloration).
<h3>Natural selection</h3>
Natural selection is the main mechanism by which evolution occurs.
Evolution means descendence with modifications, it is a process that depends on the differential survival and reproduction of the most adapted individuals in a given environment.
Genetic information (variation) is a prerequisite for evolution to occur.
Learn more about natural selection here: