How many trophic levels are there in the following food chain?

sunflower- beetle- mouse

three

Explanation:

A food chain is a distribution chain of matter and energy which occurs when one organism is consumed by the other organism. Trophic level can be define as the position an organism occupies in a food chain depending upon the feeding mechanism. For example, the plants or other autotrophs occupy the lowermost trophic level because they are capable of synthesizing their own food by the process of photosynthesis. They are called as producers. They are consumed by the herbivores they are called as the primary consumers. They are consumed by carnivores, they are called as secondary consumers. The secondary consumers are consumed by the big carnivores. They are called as the tertiary consumers.

The given food chain sunflower- beetle - mouse consists of three trophic levels. As the sunflower is the producer which is consumed by the beetle which is a primary consumer. Lastly the beetle is consumed by the mouse which is a secondary consumer.  

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.