High salinity and drought conditions may both cause Arabidopsis plants to become:

A. Dehydrated. B. Mutated. C. Malnourished due to lack of nutrients. D. A and C. E. All of the above.

Option-D

Explanation:

Arabidopsis is a model organism plant used by scientists all over the world to study the genetic mutations and the effect of various factors on the plant.

In the given case, it has been mentioned that the plants were growing in the drought or no water conditions and the high salinity or high salt conditions.

The high salt condition interferes with the absorption of other nutrients whereas, in less water condition, the loss of water from the plant not equals the absorption as a result of which the plant dehydrates.

Thus, Option-D is correct.

the reason the two sea urchins don't compete with each other for food, resources, etc. is because the urchins have adapted to the environment but they have also adapted to each other. this is most likely because the genes of the sea urchins.