Animals which live at the bottom of the sea are known as:

Bottom dwelling animals constitute:

How do organisms living in different habitats manage stressful conditions?

What is a foundation species?

Identify the organism based on the following characteristics:
- It has the ability to concentrate its urine.
- It meets its water requirements from internal fat oxidation.
- It is found in the American desert.

Thick cuticle,sunken and scotoactive stomata,$CAM$ photosynthesis,and conversion of leaves into spines are some of the important characters of