Answer:
B
Explanation:
competing with stronger organisms makes it difficult for the squirrel to be invasive
MARK me brainliest please and follow my page
Factory’s should pay the price
The highest level of organization for living things is the biosphere; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.