It’s b because they don’t use numbers but they are descriptive using adjectives
Answer:
they occur because things caused by environmental factors such as ultraviolet radiation from the sun or can occur if an error is made as DNA copies itself during cell division.
Any type of terrestrial land plant and some aquatic plants too (since you mentioned that it isn't motile)
The scientific study of plants, including their physiology, structure, genetics, ecology, distribution, classification, and economic importance
ex:When a scientist studies plants in the rain forest, this is an example of studying botany.
