Which one of the following factors is biotic
Photoperiod
$CO_2$ content to the soil
Texture and porosity of soil
Rainfall
(b) Because $CO_2$ is released through plants in soil by repiration process.
Two most important factors influencing the life of organisms are
Mango, tuna fish, snow leopards are
People living at sea level have around $5$ million $RBC$ per cubic millimeter of their blood whereas those living at an altitude to $5400$ metres have around $8$ million. This is because at high altitude
$A$ : Shivering is an adaptation for low temperature. $R$ : Shivering warms up the body
Assertion : Leaf butterfly and stick insect show mimicry to dodge their enemies.
Reason : Mimicry is a method to acquire body colour blending with the surroundings.
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