Weather is the

The genus $Quercus$ is a dominant component in:

Planktons are organisms which:

$I.$ Many xerophytic plants have thick cuticle on leaf epidermis and sunken stomata.
$II.$ Some xerophytic plants have a special photosynthetic pathway $(CAM)$ that enables their stomata to close during the day.
$III.$ $Opuntia$ has spines (modified leaves) and a photosynthetic phylloclade (stem).
$IV.$ All adaptations are genetically fixed in all organisms.
Choose the combination of correct statements.

How many major biomes are there on Earth in terms of average annual temperature and precipitation?

Chaparral occurs in which area?