what's the meaning
what's the meaning
100
species
a set of animals or plants in which the members have similar characteristics to each other and can have children with each other
100
to decrease
to go down in number
200
habitat
the type of place that a species usually lives in, such as a desert, forest, or lake
200
generation
a group of people or animals who are born and live around the same time
300
volunteer
a person who does something without payment, especially helping people or animals
300
classified as
put information into groups according to different features
400
conservation
the protection of plants and animals from the damaging effects of human activity
400
crucial
very important
500
captivity
when a person or animal is kept somewhere and is not allowed to leave
500
concern
worry