The niche of a population is defined as

Chaparral occurs in which area?

The Netherlands is a small country,yet it has a high population density. What is the most likely reason for this?

How does the kangaroo rat in North American deserts meet all its water requirements?

Consider the following four statements regarding certain desert animals like the kangaroo rat:
$(a)$ They have a dark color,a high rate of reproduction,and excrete solid urine.
$(b)$ They do not drink water,breathe slowly to conserve water,and their body is covered by thick hair.
$(c)$ They use dry seeds as food and do not require drinking water.
$(d)$ They excrete very concentrated urine and do not use water to regulate body temperature.
Which two of the above statements are true for such animals?

Kangaroo rat is found in .........