The relationships of plants and animals to each other and their environment is what ecologists call

a.) ethology
b.) an ecosystem
c.) a biome
d.) an environmental group

Ecosystem

Explanation:

In Ecology, an ecosystem refers to the interaction between the living components and non-living components of a community. The living components refers to organisms that possess life in them e.g plants, animals, microbes etc. These organisms interact with one another and also with the non-living components.

The non-living components refers to the part of the environment that does not possible life e.g temperature, climate, soil, earth, water, sun etc. Ecologists, which are individuals who study ecology reer to the relationship between plants and animals (living component) with one another and also to their physical environment as an ECOSYSTEM.

the answer to your question is sperm

the median of the data is 4.5.