Animals floating or swimming in the surface film of water are called:

Which of the following pairs is $NOT$ correctly matched?

Which one of the following is $NOT$ a characteristic of a habitat?

Which of the following hierarchies is correct with reference to the levels of biological organization?

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

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?