I only know about Blue Jays, so i hope this help you. Blue jays are sometimes known to eat eggs or nestlings, and it is this practice that has tarnished their reputation. In fact, they are largely vegetarian birds. Most of their diet is composed of acorns, nuts, and seeds—though they also eat small creatures such as caterpillars, grasshoppers, and beetles.
They are educated guesses is not true. A theory must be supported by evidence. Also it is mixed up with the word hypothesis in which case you could say that is an educated guess. Not for scientific theory
Look it up and you will get your answer
Answer:
group of interacting populations in a defined place and the nonliving factors that affect them
Explanation:
An ecosystem is a group of interacting populations in a defined place and the nonliving factors that affect them.
An ecosystem can also be a natural unit composed of living and nonliving components whose interactions result in a stable self-supporting system. Ecosystems are generally categorized as either aquatic or terrestrial.