Answer:
b. help retain moisture in terrestrial habitats
Explanation:
Arthropods such as cockroach, centipedes, spiders, crab are the members of the largest phylum Arthropoda. These are animals with paired jointed legs and their body is covered with an exoskeleton made of chitin. They live in diversified habitat and exoskeleton helps to retain moisture in theterrestrial habitats.
Similarly mollusks such as sepia, snail are soft bodied animal whose body is covered with calcareous shell as a protection and to retain moisture while living on land.
The answers would be wind speed, air pressure, and wind direction.
Wind speed and air pressure are necessary to show how fast the windmill is going, and the wind direction is necessary to show which direction the windmill is going.
I think it is c but im not for sure
Each patient is different from any other ,
No there are no vacuoles in a human but there are in a plant but not humans.