Introduction to ecology

1. which of the following is the definition of ecology?
c - the study of interactions among organisms and between organisms and their environment

2. the lowest level of environmental complexity that includes both living and nonliving factors is the
c - ecosystem

3. an ecologist observe similarities between a species of bear in north america in a species of bear in asia. which is the most likely reason that these two species have similar physical characteristics?
d - the species have adapt tatian's that allow them to live in the same type of biome

4. which ecological inquiry message is an ecologist using what he or she sets up a great house of veggies that affect of different levels of carbon dioxide on an ending shade plant species?
c - experimenting

heres the correct question and the answer