Question

Which of the following statements is true? A biome's primary productivity is affected by nonliving (abiotic) factors. The biomes across our planet have been where they are since the formation of our major land masses. Sunlight is the source of all life on our planet. The earth's rotation on its axis causes seasonal climate shifts in the Northern hemisphere. Soil composition remains constant across all biomes.

Answer 1

True Statements:

Biome's primary productivity is affected by nonliving (abiotic) factors - Abiotic factors like light, temperature, etc affect the primary productivity i.e. that photosynthesis (Plants are the primary producers).

Sunlight is the source of all life on our planet - Without sunlight, plants cannot perform photosynthesis i.e. no primary production and if there is no primary production then other species cannot survive because there will be no food.

The earth's rotation on its axis causes seasonal climate shifts in the Northern hemisphere - It causes seasonal changes on the whole of the earth not only in the Northern Hemisphere.

False Statements:

The biome on the planet underwent evolution ( slow and gradual changes) hence it was not the same from the all the time. Firstly the prokaryotes were dominating and then their evolution resulted in the formation of eukaryotes.

Soil composition is not constant across all biomes it keeps on changing.