Home
Search
Create
Library
Topics
Student
Teacher
Admin
Map
Sign in for more features
YourStory
Home
Search
Create
Library
Topics
Student
Teacher
Sign in
Feedback
Contact Us!
Assessment
What is the primary source of energy for most marine ecosystems?
Photosynthesis by phytoplankton
Decomposition of organic matter
Chemical energy from hydrothermal vents
Tides and currents
Which zone of the ocean is known for having the highest biodiversity?
Intertidal zone
Abyssal zone
Pelagic zone
Coral reef zone
What phenomenon is primarily responsible for coral bleaching?
Increased water temperature
Low light conditions
Overfishing
High nutrient levels
Submit