Which of the following are not abiotic factors of an ecosystem
a) water abundance
b) temperature
c) day length
d) herbivores

D) Herbivores

Explanation: Herbivores are the only available option that is a living creature which is biotic, therefore not abiotic.

Abiotic factors are non-living components of an ecosystem. Water abundance, temperature, and day lengths are all non living. The only living (biotic) factor is:

D) Herbivores

Herbivores are organisms that eat only plants. Being organisms they fulfill all the requirements of being biotic.

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explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.