Rainfall occurs in chaparral during

How many of the following pairs are correct regarding the thermal tolerance of organisms?
$(1)$ Aves - eurythermal
$(2)$ Mammals - stenothermal
$(3)$ Amphibia - stenothermal
$(4)$ Reptile - eurythermal

When an organism moves away temporarily from a stressful habitat to a more hospitable area and returns when the stressful period is over,what is this process called?

Match the types of niche in Column-$I$ with their description in Column-$II$.

$i$. Habitat niche	$a$. In the absence of competition in the habitat
$ii$. Trophic niche	$b$. Position of organism in the environmental gradient
$iii$. Multidimensional niche	$c$. Physical space occupied by an organism
$iv$. Fundamental niche	$d$. Level of organism in the food chain

Plants that grow in water are known as:

At what height in the Himalayan region of our country are Taiga forests located?