An ecosystem includes all of the living and nonliving factors in a given area. that is, it includes all of the organisms (e. g., plants, animals) that live in an area and the environmental factors (e. g., water, soil, climate) that affect the organisms. what is one criteria that must be met in order for an ecosystem to be stable? a. the amount of available resources in the ecosystem must change at a predictable rate. b. the population size of every organism living in the ecosystem must increase over time. c. there must be less energy flowing into the ecosystem than flows out of the ecosystem. d. the different species of organisms within the ecosystem cannot interact with one another.

A. The amount of available resources in the ecosystem must change at a predictable rate.

Explanation:

This is one of the requirements that would allow an ecosystem to be stable. In order for an ecosystem to remain stable, the amount of available resources in the ecosystem must change at a preditable rate. If this is the case, then the organisms living in it will know what they should expect and they will be able to adapt. If the resources suddenly increase, populations will explode, threatening the balance among species. If the resources unexpectedly decrease, then populations could be wiped out.

answer: i don't know

explanation:

you need to provide a picture, otherwise i can't tell you.

if you can provide one, i'd be more than happy to you with this!

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.