Life history traits of organisms have evolved in relation to the constraints imposed by which of the following?

Consider the following four statements $(a-d)$ regarding certain desert animals like the kangaroo rat:
$(a)$ They have a dark color and high rate of reproduction and excrete solid urine.
$(b)$ They do not drink water,breathe at a slow rate to conserve water,and their body is covered with thick hair.
$(c)$ They feed on dry seeds 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?

The flora and fauna in lakes or ponds are known as:

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

Plants which produce characteristic pneumatophores and show vivipary belong to

Provide information about the natural habitats of organisms.