posterior
The Greeks termd them gastraphetes.
15 is an integer, not a fraction.
Ecology and environment are closely related concepts in the study of living organisms and their interactions with each other and their surroundings. Ecology is the scientific discipline that examines the relationships between organisms and their environment, including both biotic (living) and abiotic (non-living) factors. The environment encompasses all external conditions and influences that affect ecosystems, including climate, soil, water, and human activities. Together, these terms highlight the interconnectedness of life and the importance of understanding ecosystems for conservation and sustainability.