An explanation of what causes seasons on Earth that includes the following ideas Tilt
Revolution
Direct / indirect light
Number of daylight hours

a. tilt

Explanation:

this is because the sun is different positions from the earth while tilted and while rotating

the eggs of the insects should be the first thing collected at the scene.

false

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.