conservation
/ˌkɑnsɝˈveɪʃən/
noun
the protection of the natural environment and resources from wasteful human activities
"Conservation protects natural resources."
"Conservation efforts are essential to protect endangered animals and preserve natural resources for future generations."
nature
/ˈneɪtʃɚ/
noun
everything that exists or happens on the earth, excluding things that humans make or control
"Enjoying nature is good."
"Spending time in nature, surrounded by trees and fresh air, can be incredibly restorative for the mind."
marine
/məˈrin/
adjective
related to the sea and the different life forms that exist there
"The animal is marine."
"The marine ecosystem is threatened by plastic pollution and many sea animals mistake trash for food."