What components make up the natural structure (environment)?

The light intensity can be measured by

The figure depicts annual variations in temperature and precipitation for different biomes. Based on the provided graph,identify the correct sequence of biomes corresponding to the labels $A, B, C, D, E, F$ as shown in the standard $NCERT$ diagram:
$1$. Temperate forest
$2$. Tropical forest
$3$. Coniferous forest
$4$. Grassland
$5$. Desert
$6$. Arctic and Alpine tundra

Which of the following ecological factors exerts a direct effect on organisms?

The components of soil are:

Given below are five statements.
$A.$ Organisms living in oceans,lakes,and rivers also face water-related problems.
$B.$ Euryhaline can tolerate a wide range of salinities.
$C.$ Stenohaline are restricted to a narrow range of salinities.
$D.$ Many freshwater animals cannot live for long in sea water because of the osmotic problems they would face.
$E.$ The salt concentration (measured as salinity in parts per thousand) is less than $5$ in inland waters,$30-35$ in the sea,and $>100$ in some hypersaline lagoons.