1
What someone should do
Responsibility
Any material that can be seen or touched
Cause danger
Threaten
Animals that eat other animals
Predators
Anything that can make babies with each other
Species
Population
To make something
Manufacture
Any living thing
Organism
To become an expert in a specific topic
Specialize
To keep something out or not need something
Exclude
Move something from one place to another
Transfer
Something that is hard to do
Challenge
When a species of animal or plant is no longer alive
Extinction
Make babies
Reproduce
Something that causes a situation
Factor
Groups of animals living together in one area
Colonies
Resemble
Anything that has a specific function
Device
Anything that lives in the sea
Marine
To eat or use something
Consume
Any way of doing something
Resemble
Struggle
People who study life
Biologists
An area of land that belongs to a certain animal
Territory
Main or first or best
Primary